American Philosophical Society Library

American Philosophical Society Library
Name	American Philosophical Society Library
Established	1743
Location	Philadelphia, Pennsylvania
Type	Research library, archive
Collection size	Manuscripts, rare books, maps, prints, newspapers

Contents

American Philosophical Society Library The American Philosophical Society Library is the research library and archival repository of the American Philosophical Society, founded by Benjamin Franklin in 1743; it supports study of American history, natural philosophy, exploration, and the history of science. The library holds primary-source materials connected to figures such as Thomas Jefferson, George Washington, Alexander Hamilton, John Adams, and James Madison, and to international correspondents including Charles Darwin, Alexander von Humboldt, Marie Curie, Gregor Mendel, and Antoine Lavoisier. Scholars from institutions like Harvard University, Yale University, Princeton University, University of Pennsylvania, and Columbia University consult its collections alongside researchers from museums such as the Smithsonian Institution, the British Museum, the Bibliothèque nationale de France, and the Vatican Library.

History

The library's origins trace to the founding of the American Philosophical Society by Benjamin Franklin and contemporaries including John Bartram, David Rittenhouse, and William Shipley; early acquisitions reflected networks with European correspondents such as Joseph Priestley, Erasmus Darwin, and Carl Linnaeus. Through the Revolutionary era the Society collected papers of John Hancock, Samuel Adams, Benjamin Rush, and documents relating to the Continental Congress and the Treaty of Paris (1783). In the nineteenth century the library expanded under influence from members like Thomas Cooper, Joseph Henry, Alexander Dallas Bache, and maintained exchanges with explorers such as Lewis and Clark Expedition, John James Audubon, and Matthew Flinders. In the twentieth century major additions included scientific archives from Thomas Edison, Marie Curie, Robert Oppenheimer, and correspondence with statesmen like Theodore Roosevelt, Woodrow Wilson, Franklin D. Roosevelt, and Winston Churchill. The archive continued to grow through gifts and purchases tied to institutions including the American Association for the Advancement of Science, the Royal Society, and the Académie des Sciences.

The library provides on-site reading rooms, digitization services, research fellowships, and reference support used by historians, biographers, and scientists from organizations like American Antiquarian Society, Library of Congress, National Archives and Records Administration, New York Public Library, and universities such as Rutgers University and Drexel University. It offers catalog access, digital collections, microfilm, and reproduction services for materials connected to figures including Benjamin Franklin, Thomas Jefferson, Alexander Hamilton, James Madison, John Adams, Abraham Lincoln, Ulysses S. Grant, Theodore Roosevelt, Woodrow Wilson, Franklin D. Roosevelt, and Harry S. Truman. Access policies align with professional standards from groups like the Society of American Archivists and support visiting scholars funded by foundations such as the Guggenheim Foundation, the Andrew W. Mellon Foundation, the National Endowment for the Humanities, and the Ford Foundation.

Housed in historic buildings in Philadelphia near Independence Hall and the University of Pennsylvania, the library occupies spaces designed and modified across centuries with architectural input reflecting periods associated with figures such as William Strickland and firms influenced by Benjamin Latrobe. Facilities include climate‑controlled stacks, conservation labs, map rooms, and exhibition galleries used for displays on topics ranging from American Revolution artifacts to History of Science exhibits featuring material from Charles Darwin, Marie Curie, and Alexander von Humboldt. The campus interacts with nearby institutions like the Peabody Museum, the Academy of Natural Sciences of Drexel University, and the Philadelphia Museum of Art.

Among the library's treasures are manuscript letters and notebooks by Benjamin Franklin, draft papers of Thomas Jefferson, business records of Alexander Hamilton, scientific correspondence from Charles Darwin and Michael Faraday, expedition journals from the Lewis and Clark Expedition, maps by Gerardus Mercator and Ptolemy, printed works such as early editions of Isaac Newton's Principia, early American imprints including pamphlets from Samuel Adams, and rare newspapers covering events like the Boston Tea Party and the Declaration of Independence. The library holds collections tied to inventors Thomas Edison, Nikola Tesla, and Samuel Morse as well as manuscripts from scholars such as Noam Chomsky, Claude Lévi-Strauss, Emile Durkheim, and Max Weber.

The library is governed by the American Philosophical Society's elected council and officers, historically connected with members including Benjamin Franklin, Thomas Jefferson, John Marshall, Joseph Priestley, Alexander Dallas Bache, and Samuel F. B. Morse. Funding sources include membership gifts, endowments, grants from foundations such as the Andrew W. Mellon Foundation, the National Endowment for the Humanities, fellowships supported by the Guggenheim Foundation, corporate philanthropy, and occasional governmental grants from agencies like the National Science Foundation and the Institute of Museum and Library Services. Partnerships with universities and cultural institutions ensure conservation, digitization, and public programming collaborations with organizations such as the Library Company of Philadelphia and the Historical Society of Pennsylvania.