As of July 6th, APS offices are open to staff and invited visitors. The Society will remain closed to the public for at least the rest of the summer. Library & Museum staff now have access to our collections and will respond to reference and photoduplication requests as soon as possible. However, please note that response times may be delayed due to increased demand. The Society will continue a robust slate of virtual programs throughout the summer and fall. Read more about virtual programming and resources that can be accessed remotely. For further information on the APS reopening and its COVID response, please click here.

Treasures of the American Philosophical Society

Online Exhibition

Treasures of the American Philosophical Society is a digital exhibition that shares highlights of the Society's remarkable collections. The APS is home to 13 million manuscripts, and 600,000 books, maps, prints, photographs, scientific instruments, fine art, and more. These objects trace American history and science from the Colonial era to the digital age.

Are you curious about Thomas Jefferson’s Declaration of Independence, Benjamin Franklin’s personal library, or Lewis and Clark’s journals? How about “black holes” in space or Neil Armstrong’s moon landing? Explore the Society's treasures by visiting one of these sections below.

  • Early America
  • History of Science
  • Native America
  • Natural History
  • Surprise Me
  • Staff Picks

Jump in and explore. You may be surprised!