Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Attention ESVA Patrons:

The Emilio Segrè Visual Archives’ site is moving soon and adopting an open access approach to digital image sharing. Once we have transitioned to the new site in 2021, we will no longer charge for our high-resolution digital images or usage fees (note that we do not hold copyright to all the images in our collections and you will still need to obtain permission for those which we do not own).

If you are working on a long-term project, we advise you to wait until the migration is complete so that you may obtain our copies for free. If you cannot wait, email us at nbl [at] aip.org and we will do what we can to assist you. We will not be offering refunds for past purchases.

For more information, please visit our FAQ page on the Ex Libris Universum blog. 

Yerkes Observatory E12

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Yerkes Observatory E12

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We charge a usage fee per photo if the photo is published, reproduced in a product or publicly exhibited. This is not a license in the legal sense. As a non-profit institution, we do not make any money providing these photographs. It is only by assessing usage fees that we are able to cover the cost of providing publication quality copies of our photos, preserving the photograph collection according to archival standards, and providing access to the collection by maintaining an online image database. The copyright holder may charge a fee in addition to our service fee.

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Image title: 
Yerkes Observatory staff in March 1938
Credit line: 
Photograph by Edward Lloyd McCarthy, Yerkes Observatory, University of Chicago, courtesy of AIP Emilio Segrè Visual Archives, Yerkes Observatory Collection

Yerkes Observatory staff in March 1938

From Left:
(back row): Perry Nicholas, Hans Sieghold, Otto Struve (Director), Frank R. Sullivan, Edward L. McCarthy, Roy Wickham, O. B. Fensholt and Charles Ridell
(middle row) George Van Biesbroeck, Theodosia Belland, Charles W. Hetzler, Frances Sherman, Louis G. Henyey, Edith M. Kellman, William W. Morgan and Carl Rust
(front row) Alice Johnson, Subrahmanyan Chandrasekhar, Mary Ross Calvert, Bengt Strömgren, Marguerite Van Biesbroeck, Gerard P. Kuiper, Lalitha Chandrasekhar and Jesse L. Greenstein

Photo date: 
March 1938
Original format: 
1 photographic print (black and white; 8 x 10 inches)
Yerkes Observatory
Struve, Otto, 1897-1963
Van Biesbroeck, George, 1880-1974
Henyey, Louis G.
Morgan, W. W. (William Wilson), 1906-1994
Chandrasekhar, S. (Subrahmanyan), 1910-1995
Calvert, Mary R. (Mary Ross), 1884-
Strömgren, Bengt, 1908-1987
Kuiper, Gerard P. (Gerard Peter), 1905-1973
Greenstein, Jesse L. (Jesse Leonard), 1909-2002