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.

Celebrating 275 Years of Promoting Useful Knowledge

Center for Digital Scholarship

To mark the 275th anniversary of the American Philosophical Society in 2018, this timeline highlights key events that helped define the APS during its illustrious history.