Mary Calvert using the 12-inch refractor at Yerkes Observatory,
February 23, 1926. She was Edward E. Barnard’s niece, and after
his death, co-editor of his book A Photographic Atlas of Selected
Regions of the Milky Way published in 1927 by the Carnegie Institution
of Washington. Yerkes Observatory photo, courtesy AIP
Emilio Segrè Visual Archives.

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© 2006 American Institute of Physics, One Physics Ellipse, College Park, MD 20740-3843. Email: aipinfo@aip.org Phone: 301-209-3100; Fax: 301-209-0843