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O.H. Perry Pepper to Luther P. Eisenhart, December 17, 1948
View of Philosophical Hall from Jefferson Garden
Robert M. Yerkes to Edwin G. Conklin, June 2, 1948
Eclipse of the sun at Philosophical Hall;, 1836 May 15
Leonard Carmichael to the APS Membership, February 15, 1973
American Philosophical Society. Minutes, 1793-1798
Mary Margeson at the front desk of Library Hall
Beth Carroll-Horrocks giving a treasures tour to APS Members
APS Conference on the History of Modern Science - List of Participants
Waldo G. Leland to William E. Lingelbach, November 24, 1943
Curator's Record of Donations to the Cabinet, 1841-1893
Fundraising Plan for Bank Building
APS exhibition “Designing a Nation: Science, Technology, and the Constitution”
Volunteer Investigators
Historical and Literary Committee. Letter book. Volume 1
APS Members, circa 1944
Conservation Lab Second Floor of Library Hall
View of the APS Library as housed in the Drexel Building