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Swarthmore College. Sproul Observatory (Swarthmore, Pennsylvania: 1916)
Gaustad, John E. (Director, Sproul Observatory)
National Museum of American History (U.S.). Division of Physical Sciences
- Collection ID:
Archives Center, National Museum of American History
Collection of group portraits donated by Sproul Observatory. Group portraits include participants at American Astronomical Society and I.A.U. [International Astronomical Union] meetings, as well as several other taken at Johns Hopkins University, Swarthmore College, and an autographed photo of Roy W. Delaplaine at a 24-inch refractor telescope.The photographs were accumulated in the files of the Sproul Observatory, Swarthmore College, over a period of years. They form a visual record of astronomers and attendees at astronomical meetings from 1916 to 1975.