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  3. APS.Archives

APS.Archives

Hedi Kyle, APS Conservator
Hedi Kyle, APS Conservator
Helen Black Irwin, Administrative Assistant and Secretary to the Friends
Helen Black Irwin, Administrative Assistant and Secretary to the Friends
Henry Allen Moe with foreign delegates at the opening ceremony of Library Hall
Henry Allen Moe with foreign delegates at the opening ceremony of Library Hall
Herman Goldstine and Walter Annenberg
Herman Goldstine and Walter Annenberg
Inside the APS Vault
Inside the APS Vault
Jane M. Oppenheimer
Jane M. Oppenheimer
Jefferson Garden Dedication Plaque Outside of Library Hall
Jefferson Garden Dedication Plaque Outside of Library Hall
Joint petition to the General Assembly of Pennsylvania for two lots on State House Square.
Joint petition to the General Assembly of Pennsylvania for two lots on State House Square.
Lambert, William to Thomas Jefferson, June 24, 1814
Lambert, William to Thomas Jefferson, June 24, 1814
Washington, 2p. and add., end. Proposing a topic of inquiry for the American Philosophical Society concerning the accuracy of the Julian calendar, and advocating an additional year be switched from leap year to a common year to fix a problem that will occur 3600 years from the beginning of the calendar.
Library Hall Cornerstone Plaque
Library Hall Cornerstone Plaque
Library Hall Manuscripts Room
Library Hall Manuscripts Room
Library Hall Stacks
Library Hall Stacks