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      <eadid countrycode="US">aip.org:history/ead/aip_brillouin/20010112</eadid>
      <filedesc>
         <titlestmt>
            <titleproper>Finding Aid to the Papers of Léon Brillouin, <date era="ce" calendar="gregorian">1877-1972</date>
            </titleproper>
            <sponsor>This finding aid has been encoded by the Center for History of Physics, American Institute of Physics as part of a collaborative project supported by a grant from the National Endowment of the Humanities, an independent federal agency. Collaboration members in 1999 consisted of: American Institute of Physics, California Institute of Technology, Harvard University, Massachusetts Institute of Technology, Northwestern University, Rice University, University of Alaska, University of Illinois, and University of Texas.</sponsor>
         </titlestmt>
         <publicationstmt>
            <publisher>American Institute of Physics.</publisher>
            <publisher>Center for History of Physics.</publisher>
            <address>
               <addressline>One Physics Ellipse</addressline>
               <addressline>College Park, MD 20740</addressline>
               <addressline altrender="email">nbl@aip.org</addressline>
            </address>
            <date type="publication" era="ce" calendar="gregorian">Published in 2001</date>
         </publicationstmt>
      </filedesc>
      <profiledesc>
         <creation>Machine-readable finding aid encoded in EAD v.1.0 by Clay Redding on
<date normal="20011004" type="encoder" era="ce" calendar="gregorian">October 4, 2001</date>
from an existing finding aid using NoteTab Pro and C++ scripts created by James P. Tranowski (provided by Elizabeth Dow, Special Collections, University of Vermont). Any revisions made to this finding aid occurred as part of the editing and encoding process. </creation>
         <langusage>Finding aid written in <language>English</language>.</langusage>
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      <revisiondesc>
         <change>
            <date era="ce" calendar="gregorian">May 21, 2008</date>
            <item>EAD v1.0 finding aid converted to EAD 2002 using UC Berkeley's eadv1to2002.pl perl script.</item>
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   <archdesc level="collection" type="inventory">
      <did>
         <head>Description of the Collection</head>
         <repository encodinganalog="852" label="Location of collection">
            <corpname>American Institute of Physics. Center for History of Physics.</corpname>
            <address>
               <addressline>College Park, MD 20740</addressline>
            </address>
         </repository>
         <unittitle encodinganalog="245" label="Title and dates of collection">Papers of <persname normal="Brillouin, Leon">Léon Brillouin</persname>, <unitdate type="inclusive" era="ce" calendar="gregorian">1877-1972</unitdate>
         </unittitle>
         <physdesc encodinganalog="300" label="Size of collection:">
            <extent>8.25 linear feet (17 boxes)</extent>
         </physdesc>
         <origination label="Papers/Records created by:">
            <persname source="lcnaf" encodinganalog="100">Brillouin, Léon, 1889-1969</persname>
         </origination>
         <abstract label="Short description of collection:">This collection includes the work of three generations of French physicists: Léon Brillouin (1889-1969), his father, Marcel Brillouin (1854-1948), and Léon's maternal grandfather, Éleuthère Mascart (1837-1908). The Mascart papers cover the period 1877-1910, are mostly photocopies, and includes notes and correspondence. The Marcel Brillouin portion of the collection covers the period 1887-1943 and includes correspondence, scientific notes and notebooks centered on his research on tides and the physics of the earth, bibliographies and reprints of his writings. The papers of Léon Brillouin comprise the remainder of the collection and primarily cover the period after he came to the United States, 1941-1968. It includes mostly correspondence and, manuscripts and notes relating to his work on Brillouin scattering, relativity, and information theory.</abstract>
         <note actuate="onrequest">
            <p>See below for information on access and restrictions.</p>
         </note>
         <langmaterial label="Languages Represented">
            <language langcode="eng">English</language>
         </langmaterial>
      </did>
      <controlaccess>
         <head>Selected Search Terms</head>
         <p>These papers have been indexed in the <extref xlink:type="simple" xlink:actuate="onRequest"
                    xlink:href="http://libserv.aip.org/webpac-bin/wgbroker?new+-access+top.icos">International Catalog of Sources for History of Physics and Allied Sciences (ICOS)</extref> using the following terms. Those seeking related materials should search under these terms.</p>
         <persname source="lcnaf" encodinganalog="600">Bloch, Felix, 1905-</persname>
         <persname source="lcnaf" encodinganalog="600">Bohr, Niels Henrik David, 1885-1962.</persname>
         <persname source="lcnaf" encodinganalog="600">Born, Max, 1882-1970.</persname>
         <persname source="lcnaf" encodinganalog="700">Brillouin, Marcel, 1854-1908.</persname>
         <persname source="local" encodinganalog="696">Carstoiu, John.</persname>
         <persname source="lcnaf" encodinganalog="600">Curie, Marie, 1867-1934.</persname>
         <persname source="lcnaf" encodinganalog="600">Ewald, Paul Peter, 1888-1985.</persname>
         <persname source="lcnaf" encodinganalog="600">Kelvin, William Thompson, Baron, 1824-1907.</persname>
         <persname source="lcnaf" encodinganalog="600">Langevin, Paul, 1872-1946.</persname>
         <persname source="lcnaf" encodinganalog="600">Lorentz, H. A. (Hendrik Antoon), 1853-1928.</persname>
         <persname source="lcnaf" encodinganalog="600">Love, A. E. H. (Augustus Edward Hough), 1863-1940.</persname>
         <persname source="local" encodinganalog="696">Magiros, Demetrios G.</persname>
         <persname source="lcnaf" encodinganalog="600">Manneback, Charles.</persname>
         <persname source="lcnaf" normal="Mascart, Eleuthere Elie Nicolas" encodinganalog="700">Mascart, Éleuthère Élie Nicolas, 1837-1908.</persname>
         <persname source="lcnaf" encodinganalog="600">Pauli, Wolfgang, 1900-1958.</persname>
         <persname source="lcnaf" encodinganalog="600">Planck, Max, 1858-1947.</persname>
         <persname source="lcnaf" encodinganalog="600">Rosenfeld, L. (Leon), 1904-1974.</persname>
         <persname source="lcnaf" encodinganalog="600">Schrodinger, Erwin, 1887-1961.</persname>
         <persname source="lcnaf" encodinganalog="600">Sommerfeld, Arnold, 1868-1951.</persname>
         <persname source="lcnaf" encodinganalog="600">Szent-Gyorgyi, Albert, 1893-</persname>
         <persname source="lcnaf" encodinganalog="600">Wigner, Eugene Paul, 1902-</persname>
         <corpname source="lcnaf" encodinganalog="610">Harvard University.</corpname>
         <corpname source="lcnaf" encodinganalog="610">International Business Machines Corporation.</corpname>
         <subject source="lcsh" encodinganalog="650">Brillouin scattering.</subject>
         <subject source="lcsh" encodinganalog="650">Electromagnetic waves -- Scattering.</subject>
         <subject source="local" encodinganalog="690">Elementary particles.</subject>
         <subject source="lcsh" encodinganalog="650">Gravitation.</subject>
         <subject source="lcsh" encodinganalog="650">Gravity.</subject>
         <subject source="lcsh" encodinganalog="650">Hydrodynamics.</subject>
         <subject source="lcsh" encodinganalog="650">Information theory.</subject>
         <subject source="lcsh" encodinganalog="650">Nuclear physics.</subject>
         <subject source="lcsh" encodinganalog="650">Quantum theory.</subject>
         <subject source="lcsh" encodinganalog="650">Radiation.</subject>
         <subject source="lcsh" encodinganalog="650">Relativity (Physics)</subject>
         <genreform source="aat" encodinganalog="655">Autobiography.</genreform>
         <genreform source="aat" encodinganalog="655">Laboratory notebooks.</genreform>
         <genreform source="aat" encodinganalog="655">Manuscripts.</genreform>
         <occupation source="lcsh" encodinganalog="656">Physicists.</occupation>
      </controlaccess>
      <bioghist encodinganalog="545">
         <head>Biography of Éleuthère Élie Nicolas Mascart</head>
         <p>The son of a teacher, Éleuthère E. N. Mascart was born in Quarouble, France, February 20, 1837. He received his doctorate from the École Normale in 1864. Shortly thereafter he married Mlle. Briot, daughter of Charles Auguste Briot, professor of mechanics at the Sorbonne and at the École Normale Superieure.</p>
         <p>After teaching secondary education, he became professor of physics at the College de France in 1872, a chair he held for the rest of his life. In 1884 he was elected to the French Academy of Sciences and served as permanent secretary and later president.</p>
         <p>Mascart's scientific career was marked not by great discoveries but by a steady stream of experimental and theoretical work in optics, electricity, magnetism, and meteorology, including spectroscopic exploration (using photographic detection techniques) of the ultraviolet region of the solar spectrum and determined the relative wavelengths of the principal emission lines of ten selected metals. This work won for Mascart the 1866 Prix Bordin.</p>
         <p>Mascart's many years of research in refraction and optics was recognized by the French Academy of Science when he was awarded the Grand Prix in 1874. His work in optics also led to the publication of his three-volume Traité d'optique (Paris, 1889-1893).</p>
         <p>Another area of research for Mascart was electricity and magnetism. Once again he incorporated his research into textbooks: first into his two-volume Traité d'électricité statique (Paris, 1876) and then into his two-volume Lecons sur l'électricité et el magnétisme, written with J. Joubert (Paris, 1882-1886), which was the first French textbook that attempted to treat simultaneously the work of Maxwell, Kelvin, and Helmholtz. It became a standard work for engineers as well as for physicists.</p>
         <p>Mascart's third major area of scientific activity was meteorology. He became director of the Bureau Central Météorologique (1878). He helped organize an international scientific polar expedition, as well as a French expedition to Cape Horn. The major goal of the latter was to map the magnetic field of the earth, a subject on which he published an extensive textbook, Traite de magnetisme terestre (Paris, 1900).</p>
         <p>Mascart's general prestige is reflected in his election in 1892 as a foreign member of the Royal Society and his election in 1900 as vice-president of the Institution of Electrical Engineers, the first time this post was ever held by a non-British citizen.</p>
         <p>Mascart died at the age of seventy-one in Paris in 1908 (<title xlink:type="simple" render="italic" xlink:actuate="onRequest" xlink:href="">Dictionary of Scientific Biography</title>, s.v. "Mascart, Éleuthère Élie Nicolas.").</p>
      </bioghist>
      <bioghist encodinganalog="545">
         <head>Biography of Marcel L. Brillouin</head>
         <p>Marcel Louis Brillouin was born in Melle, Deux-Sèvres, France, 19 December 1854. His father was a painter and the family lived in Paris. He was a student at the École Normale Supérieure (1874-1878) and an assistant at the Collège de France, to the well-known physicist Mascart, whose daughter he later married in 1888. In 1881 Brillouin obtained doctorates in both mathematics and physics. From 1900 he was professor of mathematical physics at the Collège de France until his retirement in 1931. He became a member of the Académe des Sciences de Paris in 1921.</p>
         <p>Brillouin was a prominent theoretical physicist, but he was also a very skillful experimenter. In his long career, he published more than 200 papers and books. His scientific interests were in meteorology, the kinetic theory of gases, liquids, solids, thermodynamics of liquids and solids, plasticity, and melting conditions, the propagation of electricity.</p>
         <p>About 1900 Brillouin spent considerable time building a new model of the Eötvös balance. This is described in a long paper published by the Académie des Sciences in 1908. There followed papers on Helmholtz' flow and surfaces of discontinuity. From 1918 to 1922, Brillouin tried to find an explanation of Bohr's condition of stable atom trajectories. The problem of an electromagnetic source in uniaxial or biaxial crystals led to papers of interest for crystal optics. From 1925 most of Brillouin's research centered on physics of the earth, especially tides. He lectured on these subjects at the Collège de France and the Institut Poincaré (1930). His lectures on tides were edited by J. Coulomb, but most of them remained unpublished.</p>
         <p>Brillouin died in Paris in 1948 (<title xlink:type="simple" render="italic" xlink:actuate="onRequest" xlink:href="">Dictionary of Scientific Biography</title>, s.v. "Brillouin, Marcel Louis.").</p>
      </bioghist>
      <bioghist encodinganalog="545">
         <head>Biography of Léon N. Brillouin</head>
         <p>Léon Nicolas Brillouin was born in Sèvres, Seine-et-Oise, France, August 7, 1889. His father was the physicist Marcel Brillouin. He received his Ph.D. in 1920 from the University of Paris where he became a professor in 1928 and served until 1932. For the next fourteen years he was a professor at the Collége de France.</p>
         <p>Brillouin was General Director of the French National Broadcasting System from 1939 to 1941. He made several trips to the United States as visiting professor at various American universities. He became a Fellow of the American Physical Society, President of the French École Libre des Hautes Etudes, a member of the Applied Mathematics Group at Columbia University and Research Lecturer at Cruft Laboratory of Harvard. In 1949 he became a U. S. Citizen. From 1953 he was adjunct professor at Columbia University. Many companies used his services as a consulting engineer in radio including the International Business Machines Corp. where he was named Director of Electronics Education. He published more than 200 papers, 12 pamphlets and 15 books.</p>
         <p>He became one of the founders of solid-state theory, and made contributions to the engineering of radio antennas and to transmission of electric waves in cables, and studies of the motion of electron beams in magnetrons and in traveling-wave tubes.</p>
         <p>Brillouin died in 1969.</p>
      </bioghist>
      <scopecontent encodinganalog="520">
         <head>Scope and Contents of Collection</head>
         <p>This collection includes the work of three generations of French physicists: Léon Brillouin (1889-1969), his father, Marcel Brillouin (1854-1948), and Léon's maternal grandfather, Éleuthère Mascart (1837-1908). A significant portion, especially of the earlier papers, is in French.</p>
         <p>The Mascart papers are contained in the first four folders and cover the period 1877-1910. Included are photocopies of notes and correspondence to Mascart primarily from Lord Kelvin (1877-1908), a reprint of "The Life and Work of Lord Kelvin" written by Silvanus P. Thompson, several reprints by Mascart and Kelvin on electricity, and a typed list of his honors.</p>
         <p>The Marcel Brillouin portion of the collection comprises nearly six boxes and includes correspondence to him (1887-1939), some of which are photocopies; scientific notes and notebooks (ca. 1900-1943), many centered on his research on tides and the physics of the earth, oceanography, and meteorology; bibliographies and reprints of his writings; and reprints of others writings. One file contains correspondence between Brillouin and H. A. Lorentz from 1911 regarding Marie Curie and Paul Langevin. In addition to his son, Léon, other correspondents included M. Planck, H. Fischer, and A. Summerfeld, Augustus E. H. Love, and Rolin Wavre.</p>
         <p>The papers of Léon Brillouin comprise the remainder of the collection and cover the period after he came to the United States, 1941-1968. Most of the correspondence is incoming, international in scope, and includes among the signatures those of Niels Bohr, Felix Bloch, Max Born, P. P. Ewald, A. D. Fokker, Jean Loiseau, Rene Lucas, Charles Mannebak, Erwin Schrodinger.</p>
         <p>The manuscript files often include his notes, corrections, informational materials, and sometimes correspondence related to his topic. They relate to Brillouin's most important post-WWII research such as Brillouin scattering, relativity, and information theory.</p>
         <p>There is a significant collection of reprints by others, that are annotated or have annotations laid in which are organized in the following topics: general relativity, gravity propagation, nuclear and particle physics, atomic clocks, and quantum theory. The remainder of the reprints are arranged alphabetically by author.</p>
         <p>Also included is Brillouin's undated student notebook (ca. 1911) of lectures by Paul Langevin in which he gives details of relativity theory shortly before Einstein published his work.</p>
         <p>The addition to the papers consists primarily of manuscripts, notes and correspondence. The most significant manuscript is that of <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Relativity Reexamined</title> which includes notes and correspondence. Also included are published volumes of <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Wave Propagation in Periodic Structures</title> and <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Science and Information Theory</title> with annotated "corrections," insets, and comments.</p>
         <p>The correspondence is from the 1960s, sporadic and mostly personal in nature.</p>
         <p>The remainder of that series includes the French version of an autobiography "Revue D'une Carriere Scientifique" written for the American Institute of Physics in 1962 and revised in 1966;a scrapbook kept by Mrs. Brillouin; and documents relating to Brillouin's death and estate matters.</p>
      </scopecontent>
      <arrangement encodinganalog="351">
         <head>Organization of Collection</head>
         <p>The papers are organized in four series: I. The Papers of Éleuthère Mascart, 1877-1910; II. The Papers of Marcel Brillouin, 1887-1943; III. The Papers of Léon Brillouin, 1911-1969 (bulk, 1943-1969); IV. Addition to the Papers of Léon Brillouin, 1953-1972.</p>
      </arrangement>
      <arrangement encodinganalog="351">
         <head>Arrangement of Collection</head>
         <p>Files arranged chronologically.</p>
      </arrangement>
      <accessrestrict encodinganalog="506">
         <head>Access to Collection</head>
         <p>Open to qualified researchers without restrictions.</p>
      </accessrestrict>
      <userestrict encodinganalog="540">
         <head>Restrictions on Use of Collection</head>
         <p>Use of primary source material in the Niels Bohr Library requires prior approval through an Application for Access, which includes a statement of research purpose and the names and addresses of two scholars as references. Access applications can be obtained by contacting the Library (telephone 301-209-3177; or e-mail <extref xlink:type="simple" xlink:actuate="onRequest" xlink:href="mailto:nbl@aip.org">nbl@aip.org</extref>). The application can also be printed from <extref xlink:type="simple" xlink:actuate="onRequest"
                    xlink:href="http://www.aip.org/history/access.htm">our website</extref>.</p>
      </userestrict>
      <acqinfo encodinganalog="541">
         <head>Provenance and Acquisition Information</head>
         <p>The major portion of this collection was in the possession of Léon Brillouin and was deposited at the Neils Bohr Library by his widow, Marcelle Brillouin, in 1970. A small addition to the collection was received after her death in 1986. According to the Brillouin family, most of his earlier correspondence and papers were lost during World War II.</p>
      </acqinfo>
      <processinfo>
         <head>Processing Information</head>
         <p>The bulk of the collection was processed shortly after its deposit in the early 1970s, and an item-level finding aid was created.</p>
         <p>Though the addition was deposited in 1986, it was not processed until 2000. The papers were mostly in brown envelopes or single items with no particular organization.. An artificial organization was created to facilitate access. For preservation reasons, the scrapbook was dismantle and the items placed in acid free envelopes and folders in the collection. At that time this revised finding aid was created which includes the entire collection.</p>
      </processinfo>
      <relatedmaterial>
         <head>Other Related Materials</head>
         <list type="simple">
            <item>Oral History Interview with Léon Brillouin, 1962</item>
            <item>Revue D'une Carriere Scientifique, an autobiography of Léon Brillouin</item>
         </list>
      </relatedmaterial>
      <separatedmaterial>
         <head>Materials Separated from Collection</head>
         <p>Photographs in the collection have been removed to the Emilio Segrè Visual Archives, but photocopies of the photographs remain with the collection.</p>
      </separatedmaterial>
      <dsc type="analyticover">
         <head>Series Descriptions</head>
         <c01 level="series">
            <did>
               <unittitle>Series I, The Papers of Éleuthère Mascart, <unitdate type="inclusive" era="ce" calendar="gregorian">1877-1910</unitdate>
               </unittitle>
               <physdesc>
                  <extent>Box 1</extent>
               </physdesc>
            </did>
            <scopecontent>
               <p>This is Brillouin's small collection of materials from his maternal grandfather. Includes photocopies of penciled scientific notes (no date); correspondence to Mascart from Lord Kelvin, 1877-1908; offprints, 1894-1910.</p>
            </scopecontent>
         </c01>
         <c01 level="series">
            <did>
               <unittitle>Series II, The Papers of Marcel Brillouin, <unitdate type="inclusive" era="ce" calendar="gregorian">1887-1943</unitdate>
               </unittitle>
               <physdesc>
                  <extent>Boxes 1-6</extent>
               </physdesc>
            </did>
            <scopecontent>
               <p>This is Brillouin's collection of his father's papers. Includes correspondence, scientific notes and notebooks, many of which relate to his research on tides and the physics of the earth, bibliographies, and reprints.</p>
            </scopecontent>
         </c01>
         <c01 level="series">
            <did>
               <unittitle>Series III, The Papers of Léon Brillouin, <unitdate type="inclusive" era="ce" calendar="gregorian">1911-1969 (bulk, 1943-1969)</unitdate>
               </unittitle>
               <physdesc>
                  <extent>Boxes 7-14</extent>
               </physdesc>
            </did>
            <scopecontent>
               <p>This series relates to the career of Léon Brillouin and covers primarily the period after he came to the United States. It includes mostly correspondence, manuscripts, and notes. Some of the correspondents include Bohr, Born, Manneback, Schrodinger. The manuscripts and notes relate to some of Brillouin's most important post-WWII work such as Brillouin scattering relativity, and information science. Of interest also are his ca. 1911 student notebooks of lectures by Paul Langevin on the theory of relativity.</p>
            </scopecontent>
         </c01>
         <c01 level="series">
            <did>
               <unittitle>Series IV, Addition to the Papers of Léon Brillouin, <unitdate type="inclusive" era="ce" calendar="gregorian">1953-1972</unitdate>
               </unittitle>
               <physdesc>
                  <extent>Boxes 15-17</extent>
               </physdesc>
            </did>
            <scopecontent>
               <p>This series consists primarily of manuscripts, notes, and correspondence. The correspondence is sporadic and mostly personal in nature. The most significant manuscript is that of Relativity Reexamined. Also includes the French version of an autobiography "Revue D'une Carriere Scientifique," a scrapbook, and documents relating to his death and estate matters.</p>
            </scopecontent>
         </c01>
      </dsc>
      <dsc type="in-depth">
         <head>Container List</head>
         <c01 level="series">
            <did>
               <unittitle>Series I, Papers of Éleuthère Mascart, <unitdate era="ce" calendar="gregorian">1877-1910</unitdate>
               </unittitle>
            </did>
            <c02 level="file">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 1</container>
                  <unittitle>Penciled scientific notes, cover page says "L. Kelvin" (Mascart's Handwriting?) Photocopies, No date</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Correspondence to Mascart from Lord Kelvin (Photocopies), 1877-1908</unittitle>
               </did>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>3 pp. ALS, 4/18/1877</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>2 pp. ALS, 5/28/1880</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>2 pp. Hand other than Kelvin, signed by Kelvin, 2/4/1882</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS, 4/28/1882</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>2 pp. ALS, 10/24/1883</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p. ALS, 1/11/1884</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS, 7/8/1888</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS, 6/4/1889</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>2 pp. ALS, 6/23/1889</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>7 pp. ALS, 6/2/1890</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS, 4/27/1891</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS, 9/16/1891</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. Hand other than Kelvin, signed with post-script by Kelvin, 1/14/1892</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p. ALS, 9/28/1893</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>2 pp. ALS, 10/1/1893</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>2 pp. ALS (pencil), 2/2/1895</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p. Hand other than Kelvin, signed by Kelvin; pencilled notes in French on petrographie by Mascart (?), 2/4/1895</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p. ALS, 6/23/1896</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>3 pp. ALS, 4/27/1897</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>8 pp. ALS, 6/10/1900</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS, 12/30/1900</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS, 1/22/1903</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p TLS, 2/16/1904</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p. TLS, (date sometime between 2/19/1904 and 3/16/1904) 1904</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p. TLS, 3/16/1904</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>3 pp. ALS from Frances A. Kelvin (Lady Kelvin) to Mme. Mascart, 8/16/1907</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p. Hand other than Kelvin to Mme. Mascart, signed by Kelvin, 10/3/1907</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS to Mme. Mascart, 10/13/1907</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>3 pp. ALS, 10/28/1907</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS from Bottomley to Mme. Mascart, 12/?/1907</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>1 p. Printed appreciation of condolences on the death of Kelvin, 1/1908</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>3 pp. ALS from Bottomley to Mme. Mascart, 1/25/1908</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>4 pp. ALS from S.A. Thompson to Mascart with enclosure: <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">The Kelvin Lecture, The Life and Work of Lord Kelvin</title>, by S. A. Thompson, signed by the author, 6/26/1908</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="item">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Offprints, Mascart, Lord Kelvin, and P. Janet, 1894-1910</unittitle>
               </did>
            </c02>
            <c02 level="item">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Mascart, E., <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Electricite Moderne</title>, 17 pp. 1894</unittitle>
               </did>
            </c02>
            <c02 level="item">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Kelvin, Lord, <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Nineteenth Century Clouds Over the Dynamical Theory of Heat and Light</title>, 1900</unittitle>
               </did>
            </c02>
            <c02 level="item">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>
                     <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Medaille Offerte a M. Mascart</title>, 1902</unittitle>
               </did>
            </c02>
            <c02 level="item">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Janet, P., <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">La Vie et les Oeuvres de E. Mascart</title>, 1910</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 4</container>
                  <unittitle>List of Mascart's Honors, No date</unittitle>
               </did>
            </c02>
         </c01>
         <c01 level="series">
            <did>
               <unittitle>Series II, Papers of Marcel Brillouin, 1887-1943</unittitle>
            </did>
            <c02 level="file">
               <did>
                  <unittitle>Letters to Marcel Brillouin, 1887-1939</unittitle>
               </did>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>3 pp. ALS A. E. H. Love, 8/2/1887</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>4 pp. ALS A. B. Basset, 5/6/1888</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>2 pp. Hand other than Kelvin, signed by Kelvin, 8/17/1904</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>1 p. ALS Max Planck (in German with notes in French re Lachan written on back), 12/13/1905</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>p.c. ALS Max Planck, 12/18/1905</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>4 pp. ALS Léon Brillouin (photocopy), 12/31/1912</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>4 pp. ALS Léon Brillouin (photocopy), 1/20/1913</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>4 pp. ALS Léon Brillouin (photocopy), 2/22/1913</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>7 pp. ALS Léon Brillouin (photocopy), 3/13/1913</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>3 pp. ALS H. Fischer and A. Sommerfeld, 12/18/1913</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>4 pp. ALS Léon Brillouin, n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 1</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>1 p. ALS R. Wavre, 3/12/1939</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 6</container>
                  <unittitle>Correspondence between M. Brillouin, J. Perrin and H. A. Lorentz regarding Langevin-Curie Affair, 1911</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folder 7</container>
                  <unittitle>Scientific Notebook, 1918</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 1</container>
                  <container type="folder">Folders 8-10</container>
                  <unittitle>Three Bound volumes of handwritten lecture notes. Spine label, "Brillouin - Marees - Red. Coulomb, 1929, 1930, 1931</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 2</container>
                  <unittitle>Marcel Brillouin, Scientific Notebooks, 1926-1934</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 3</container>
                  <unittitle>Marcel Brillouin, Notebooks, 1935-1943</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 4</container>
                  <container type="folder">Folders 1-9</container>
                  <unittitle>Marcel Brillouin, Notebooks, undated</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Materials relating to Marcel Brillouin</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Three tide charts, n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>Marcel Brillouin, pencilled writings in French, 12/1937, on blank reverse sides of printed pages (probably proof sheets from <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Comptes Rendus</title> des Seances de l'Academie des Sciences). 1937</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Mathematical calculations written on envelope 1943</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Scientific notes, 5/20/1913 (postmark) pencilled on back of envelope addressed to Marcel Brillouin. 1913</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Notes and calculations about papers by Love, Zenneck, and Whittaker. Also two papers of Marcel Brillouin reprinted from Comptes Rendus, annotated. 1908</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Notes titled "Barriere circum Atlantique" n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Notes on reverse side of proof sheets from Annales de Physique, 21 pp. n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 8</container>
                     <unittitle>Scientific notes, 2 pp. n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 9</container>
                     <unittitle>Bibliographies of Marcel Brillouin's scientific writings, 4 vols. ca. 1904-1930</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <unittitle>Reprints of Marcel Brillouin's papers</unittitle>
                  </did>
                  <c04 level="item">
                     <did>
                        <container type="box">Box 5</container>
                        <container type="folder">Folder 10</container>
                        <unittitle>Fonctions spheriques multipolaires non antipode. Recurrences. <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Comptes Rendus</title>, t. 195, p. 1185 1932</unittitle>
                     </did>
                  </c04>
                  <c04 level="item">
                     <did>
                        <container type="box">Box 5</container>
                        <container type="folder">Folder 10</container>
                        <unittitle>Oscillations d'un liquide pesant dans bassin cylindriques en rotation. Gauthier-Villars, Paris 1933</unittitle>
                     </did>
                  </c04>
                  <c04 level="item">
                     <did>
                        <container type="box">Box 5</container>
                        <container type="folder">Folder 10</container>
                        <unittitle>Fonctions spheriques. Formules generales de recurrences. Developpement des fonctions non antipodes en senries de polynomes de Legendre et de Laplace. <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Compes Rendus</title>, t. 196, p. 184 1933</unittitle>
                     </did>
                  </c04>
                  <c04 level="item">
                     <did>
                        <container type="box">Box 5</container>
                        <container type="folder">Folder 10</container>
                        <unittitle>Equations aux derivees partielles du 2e ordre. Domaines a connexion multiple. Fonctions spheriques non antipode. <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Annales de l'Institut Poincare</title>, pp. 173-206 1936(?)</unittitle>
                     </did>
                  </c04>
                  <c04 level="item">
                     <did>
                        <container type="box">Box 5</container>
                        <container type="folder">Folder 10</container>
                        <unittitle>Qu'apprendon de l'interieur du globe par les mesures failtes a sa surface? Pesanteur. Magnetisme. <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Annales de l'Institut Poincare</title>, t. 8, p. 11 1938</unittitle>
                     </did>
                  </c04>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 12</container>
                     <unittitle>"30 ans d'Enseignement au College de France, 1900-1931" 1931</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 13</container>
                     <unittitle>Jubile scientifique de M. Marcel Brillouin; allocutions prononcees a la ceremonie du 17 Decembre 1935, Gauthier-Villars, Paris 1936</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 14</container>
                     <unittitle>Liste et ordre des allocutions, typescript, 1 p. n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 14</container>
                     <unittitle>Allocution pour H. Abraham. Holograph draft signed M.B., 9 pp. ; final typescript, carbon copy, 4 pp. n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 14</container>
                     <unittitle>Comite a la memoire des savants francais victimes de la bararie allemande, Paris n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 5</container>
                     <container type="folder">Folder 14</container>
                     <unittitle>Henri Villat, "Notice necrologique sur M. Marcel Brillouin." Comptes Rendus, t. 226, p. 130 1948</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Reprints By Others, 1879-1944</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Courtier, M. A. (8 items)</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Doodson, A. T. (5 items)</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Fichot, E. (1 item)</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Floquet, Gaston (Thesis) (1 item)</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Giraud, G. (2 items attached, letter enclosed)</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Humbert, Pierre (Several items attached, holograph notes)</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Hylleraas, E. A. (1 item)</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Perthes, J. (1 item)</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Proudman, J. A. (4 items)</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Thysse, M. J. Th. (1 item, 2 letters enclosed)</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Wavre, R. (5 items)</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 6</container>
                     <unittitle>Zuiderzee, published report, 1926</unittitle>
                  </did>
               </c03>
            </c02>
         </c01>
         <c01 level="series">
            <did>
               <unittitle>Series III, Papers of Léon Brillouin</unittitle>
            </did>
            <c02 level="file">
               <did>
                  <unittitle>Correspondence, A-B (to L. Brillouin), 1943-1968</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Alger, P. L. to Richardson (copy to Brillouin), 1943</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Alsina, F., 1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>American Ethical Union, 1967</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Baranger, P., 1960</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Blachman, N. M., 1956</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Bloch, F., 1945, 1951</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Bohr, N., 1951-1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Born, M., 1959 (2), 1960 (2), 1962</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Bridgman, P. W., 1942, 1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Brillouin, J., 1963 (3)</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>de Broglie, L, 199-59</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Brouwer, D., 1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Briiche, I. E., 1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>Correspondence/Cecchi (with reprint of thesis), 1965</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Correspondence, Ch-F</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Choynowski, M. (2), 1960</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Courtuies, H., 1945</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Cramer, H. (4), 1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Crane, H. R., 1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Dockx, S., 1965</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Doodson, A. T., 1948</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Dubois, Ph., 1956</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Elsasser, Walter M. (4), 1956-1965</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Errera, J. (2), 1964-1965</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Ewald, P. P. (2), 1941, 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Fierz, N., 1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Fokker, A. D. (2), 1966</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Correspondence, Ga-Kr</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Gabor, D. (3), 1956-1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Girard, A., 1965</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Goldstein, G. D., 1966</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Greig, J. (2), 1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Grigorian, A. (2), 1962-1965</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Hirschfelder, J. (2), 1959-1960</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Hsu, H. (With two reprints), 1967</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Infeld, L., 1966</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Janet, M. (3) w/manuscript by R. Thom, 1964-1965</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Kastler, A., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Kihlberg, A., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Kirk, G., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Kowarski, L., 1961</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>von Krbek, F. (MSS attached), 1933</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Correspondence, L-R, 1943-1968</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Lamb, W. E. (2), 1961</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Loiseau, J. (MSS attached), 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Lowdin, P., 1960</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Lucas, R. (6), 1960-1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Manneback, C. (6), 1965-1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Morot-sir, E., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Parodi, M. (2), 1948-1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Pauli, W., 1943</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Proudmann, J., 1948</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Redfield, A.C., 1948</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Riess, K., 1953</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Correspondence, S., 1942-1968</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Schawlow, A. L., 1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Schrodinger, E. (10), 1942-1959</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Seeger, R. J. (4), 1957</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Segre, E., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Societe Francaise des Electroniciens et des Radioelectriciens, 1963</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Suworoff, N. P. (in Russian with French translation and two reprints attached), 1965</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Szent-Gyorgyi, A., 1962</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Szilard, L., 1961</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Correspondence, U-Y, 1954-1968</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Ulam, S. M., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Vaga, T. (With MSS attached), 1969</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Van der Pol, B., 1954</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Vantroys, L., 1956</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Van Vleck, J. H., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Vogel, T., 1966</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Wigner, E. P., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Wilson, J. A. (With two MSS attached), 1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 7</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>Yvon, J. to Lucas, R. (copy to Brillouin), 1966</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 7</container>
                  <container type="folder">Folder 8</container>
                  <unittitle>Student notebook of lectures by Langevin., ca. 1911</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 7</container>
                  <container type="folder">Folder 9</container>
                  <unittitle>Biographical materials</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 7</container>
                  <container type="folder">Folder 10</container>
                  <unittitle>Correspondence with Thomas Kuhn regarding the project on the Sources for the History of Quantum Physics. (4 items), 1961-1962</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 7</container>
                  <container type="folder">Folder 10</container>
                  <unittitle>Correspondence with James King regarding project on the History fo Recent Physics in the United States. (4 items), 1962</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 7</container>
                  <container type="folder">Folder 11</container>
                  <unittitle>List of addresses</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 7</container>
                  <container type="folder">Folder 12</container>
                  <unittitle>Biography of Léon Brillouin by D. W. Harding</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 7</container>
                  <container type="folder">Folder 13</container>
                  <unittitle>Notebook, Annuaire du College de France; a bibliography of Brillouin writings from 1932 with brief biographical notations. Attached are two copies of "Titres et Travaux Scientifiques,: biographical and bibliographical information, 1921-1931</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 7</container>
                  <container type="folder">Folder 14</container>
                  <unittitle>Awards to Léon Brillouin, 1940s and 1950s</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 1</container>
                  <unittitle>Manuscript Biography of Marcel Brillouin, 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 2</container>
                  <unittitle>Souvenirs sur Henri Abraham (carbon copy), 3 pp., 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 2</container>
                  <unittitle>Letter from A. Kastler to Brillouin inviting him to write "Souvenirs.", 1967</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 2</container>
                  <unittitle>Souvenirs sur Paul Langevin. Holograph draft addressed to Andre Langevin, 8 pp., 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Manuscripts, notes and correspondence, including a discussion between Brillouin and Léon Rosenfeld on "Revue de Metaphysique et de Morale", 1956-1962</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Solitaire ou Embrigade, typescript, 13 pp. In La <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Nouvelle Nouvelle Revue Francaise</title>. 1956</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Science et Imagination, carbon copy of transcript, 12 pp. 1961</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Transformations et Atavars de la Notion de la Champ, typescript, corrected, 7 pp. (International Academy for Philosophy of Sciences, Paris), 1961</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>
                     <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Revue de Metaphysique et Morale</title>, 1962</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Letter from Brillouin to L. Rosenfeld, 2 carbon copies, annotated, 2 pp. 1961</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Academie Internationale de Philosophie des Science, report by L. Brillouin, (discussion between Brillouin and Rosenfeld), typescript, 5 pp. (With two sheets of holograph notes attached.)</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 8</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>The Crepuscule of Science, letter to the editor of Nature. (Carbon copy of typescript), 1 p., 1962</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Manuscripts and Notes</unittitle>
               </did>
               <c03 level="item">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>La Fleche du Temps, annotated, 20 pp., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>The Arrow of Time, copy, 19 pp., 1964</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Reprint by Rene Sudre "Revue Scientifique: La Droite et la Gauche.", 1966</unittitle>
                  </did>
               </c03>
               <c03 level="item">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>"La Limite de Validite des Theories Physiques," typescript, 28 pp., 1966</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Typed extracts from Dialogues Philosophiques, by E. Renan and holograph notes., no date</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>"General Relativity Theory of Gravitation and Experiments."(draft typescript and, in part, holograph), 10 pp., 1965</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 6</container>
                     <unittitle>Annotated reprint "La Relation Masse-Energie en Gravitation," by Brillouin and R. Lucas, with notes, 1966</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 7</container>
                     <unittitle>"Deplacement Cosmique vers le Rouge et Radiation Thermique Interstellaire," Draft typescript, 3 pp., with notes, 1967</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 8</container>
                     <unittitle>Qu'Entend-on par Systeme de Reference en Mecanique? Discussions de Graves Hypotheses sous-entendues. Typescript, xerox copy, 20 pp. Includes correspondence and published version. 1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 9</container>
                     <unittitle>"Birth and Growth of the Brillouin Scattering." presented at the International conference on Light-Scattering in Solids, 1968, NYU Typescript, 3 pp. (mimeograph). Includes correspondence and Brillouin's first paper, "Diffusion de la Lumiere par un Corps Transparent Homogene (Comptes Rendus, May 1914); "Brillouin Scattering," typescript dated 2/1/1965, 4 pp. and Miscellaneous material relating to the conference.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 10</container>
                     <unittitle>Preface to Japanese Translation of Science and Information Theory. Typescript, carbon copy, 2 pp. first edition, 1956 or second edition, 1961.</unittitle>
                     <unitdate era="ce" calendar="gregorian">of Science and Information Theoryfirst edition, 1956 or second edition, 1961</unitdate>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 11</container>
                     <unittitle>Faut-il Veritablement Incurver l'Univers? Draft, in part typescript, in part holograph 6 pp. Faut-il Courber l'Univers? Holograph draft, 3 pp. and notes, 1965-1966</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 12</container>
                     <unittitle>"The Problem of Ocean Tides," typescript, carbon copy, 3 pp., n.d., correspondence, notes and typescripts relating to tides; issue of <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">European Scientific Notes</title>, Oct., 1948.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 13</container>
                     <unittitle>"La Liberte et L'Observation dans les Science Experimentales; Reflexions d'un Physicien," typescript, 14 pp., n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 14</container>
                     <unittitle>"Imagination et Information Scientifiques," holograph draft, 6 pp. with notes, n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 15</container>
                     <unittitle>Quantum theory notes., n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 16</container>
                     <unittitle>Information Theory and Knowledge., n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 17</container>
                     <unittitle>Particle physics (includes glass slides) 1960</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 18</container>
                     <unittitle>Perihelion Precession of Mercury (General Relativity), 1966</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 19</container>
                     <unittitle>Bohr theory of the atom (electromagnetic charge interaction), n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 20</container>
                     <unittitle>The nature of scientific thought, 1962</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 21</container>
                     <unittitle>"Poincare - Notes" Includes holograph notes, reprints, typescripts extracted from works about Poincare and astronomy.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 22</container>
                     <unittitle>Notebook on special relativity, 1966</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 23</container>
                     <unittitle>Notes labeled "Schwarzschild solution rediscussed", n.d.</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 24</container>
                     <unittitle>Outlines of lectures on applied mathematical physics, 1943-1949</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 25</container>
                     <unittitle>Reviews of Léon Brillouin's book,"Vie, matiere et observation", 1959-1960</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 26</container>
                     <unittitle>Science and Information theory, 1st ed., 1956. Reviews and correspondence, 1956</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 27</container>
                     <unittitle>
                        <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">La Science et la Theorie de l'information</title>, 1956-</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 28</container>
                     <unittitle>Scientific uncertainty and information, Reviews and correspondence, 1964</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 29</container>
                     <unittitle>Letters and reprints relating to Slavic translations of Brillouin's <title xlink:type="simple" render="underline" xlink:actuate="onRequest" xlink:href="">Science and Theory of Information</title> by H. H. Harkevitch, 1960</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 8</container>
                     <container type="folder">Folder 30</container>
                     <unittitle>Reviews of Brillouin's books, 1958-1962</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 9</container>
                  <unittitle>Reprints by Brillouin, some annotated, some with notes, 1921-1967</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Reprints and Correspondence relating to John Carstoiu and Demetrios G. Magiros, 1960s</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 10</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Carstoiu Papers and Correspondence, 1967-1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 10</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>Correspondence regarding Magiros paper controversy, 1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 10</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Magiros typescripts, 1960s</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 10</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Magiros reprints, 1960s</unittitle>
                  </did>
               </c03>
            </c02>
            <c02 level="file">
               <did>
                  <unittitle>Reprints by others grouped by subject</unittitle>
               </did>
               <c03 level="file">
                  <did>
                     <container type="box">Box 11</container>
                     <container type="folder">Folder 1</container>
                     <unittitle>Reprints on General Relativity, 1958-1967</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 11</container>
                     <container type="folder">Folder 2</container>
                     <unittitle>Reprints on Gravitational Radiation, 1966-1969</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 11</container>
                     <container type="folder">Folder 3</container>
                     <unittitle>Reprints on Particle Physics, 1956-1958</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 11</container>
                     <container type="folder">Folder 4</container>
                     <unittitle>Reprints on Atomic Clocks, 1966-1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 11</container>
                     <container type="folder">Folder 5</container>
                     <unittitle>Reprints on Quantum theory, 1966-1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 12</container>
                     <unittitle>Reprints by others, A - F, 1923-1967</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 13</container>
                     <unittitle>Reprints by others, G - S, 1943-1968</unittitle>
                  </did>
               </c03>
               <c03 level="file">
                  <did>
                     <container type="box">Box 14</container>
                     <unittitle>Reprints by others, Sp-W, 1944-1968</unittitle>
                  </did>
               </c03>
            </c02>
         </c01>
         <c01 level="series">
            <did>
               <unittitle>Series IV, Additions to Papers of Léon Brillouin, 1953-1972</unittitle>
            </did>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 1</container>
                  <unittitle>McGraw-Hill Publishers, 1945</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 2</container>
                  <unittitle>Notes on E. J. Post's Sagnac Effect, 1967</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Notes and Reprints on Gravitation, 1960s</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 4</container>
                  <unittitle>Articles on Gravitation, 1968-1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 5</container>
                  <unittitle>Reprints on Relativity, 1960s</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 6</container>
                  <unittitle>Manuscripts and Notes on "Il faut repenser la Relativite", 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 7</container>
                  <unittitle>Manuscript, "Reexamination of Relativity", 1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 8</container>
                  <unittitle>Manuscript and Notes, "Some Problems about Restricted Relativity", 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 9</container>
                  <unittitle>Manuscript and Notes, "Quantum Theory vs. Relativity", 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 10</container>
                  <unittitle>Examples and Discussion, "Doppler Effect", 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 11</container>
                  <unittitle>Manuscript and Notes on Relativity, 1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 12</container>
                  <unittitle>Manuscript and Notes, "Gravitation and Relativity", 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 13</container>
                  <unittitle>Manuscript, "Relativity Reexamined", 1966-1967</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 14</container>
                  <unittitle>Manuscript and Notes "Relativity Reexamined", 1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 15</container>
                  <unittitle>Manuscript, "A Gravistatic Problem with Spherical Symmetry", 1968</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 16</container>
                  <unittitle>Manuscripts on Relativity, 1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 17</container>
                  <unittitle>Manuscripts on Relativity, 1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 18</container>
                  <unittitle>Annotated volume, "Wave Propagation in Periodic Structures", no date</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 15</container>
                  <container type="folder">Folder 19</container>
                  <unittitle>Annotated volume, "Science and Information Theory", 1960</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 1</container>
                  <unittitle>Photographs (Brillouin family, friends, and colleagues)</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 2</container>
                  <unittitle>Correspondence, 1959-1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Correspondence, 1968-1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 4</container>
                  <unittitle>Correspondence on Arthur Holly Compton, 1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 5</container>
                  <unittitle>Correspondence with R. Lucas re Mannheimer, 1966-1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 6</container>
                  <unittitle>Correspondence on artwork, 1953-1955</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 7</container>
                  <unittitle>Artwork - Modigliani, 1959</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 8</container>
                  <unittitle>Reprints about Paul Langevin by Andre Langevin, Luce Langevin, B. Kouznetzov, 1966, 1971, 1972</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 9</container>
                  <unittitle>Items from Scrapbook kept by Mrs. Brillouin</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 10</container>
                  <unittitle>A. Kastler "La vie et l'oeuvre de Léon Brillouin" 1970</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 16</container>
                  <container type="folder">Folder 11</container>
                  <unittitle>Autobiography "Revue D'une Carriere Scientifique" (2 copies), 1966</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 17</container>
                  <container type="folder">Folder 1</container>
                  <unittitle>Léon Brillouin's death, 1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 17</container>
                  <container type="folder">Folder 2</container>
                  <unittitle>Letters of condolence, 1969</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 17</container>
                  <container type="folder">Folder 3</container>
                  <unittitle>Post-mortem letters to Brillouin, 1969-1972</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 17</container>
                  <container type="folder">Folder 4</container>
                  <unittitle>Post-mortem correspondence, 1969-1973</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 17</container>
                  <container type="folder">Folder 5</container>
                  <unittitle>Correspondence regarding royalties, 1975-1982</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 17</container>
                  <container type="folder">Folder 6</container>
                  <unittitle>Family death certificates</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 17</container>
                  <container type="folder">Folder 7</container>
                  <unittitle>Personal items, appraisals, estate returns and agreements</unittitle>
               </did>
            </c02>
            <c02 level="file">
               <did>
                  <container type="box">Box 17</container>
                  <container type="folder">Folder 8</container>
                  <unittitle>Passports and miscellaneous items</unittitle>
               </did>
            </c02>
         </c01>
      </dsc>
   </archdesc>
</ead>