APS buildings are open to staff and invited visitors. The Library is under renovation until early 2022. We are doing a major upgrade to our technological infrastructure, making some digital collections and services unavailable. If you need immediate assistance with collections, please contact reference@amphilsoc.org.

From the Blog

The American Philosophical Society is the oldest learned society in the United States. Founded by Benjamin Franklin in 1743, it continues its mission of "promoting useful knowledge" through research, fellowships, and public outreach.