APS buildings are open to staff and invited visitors. The Library is under renovation until early 2022. Virtual programs are ongoing. Read more about the APS's COVID response and operating procedures.

Collection Areas

Explore the Society's rich holdings by clicking on a core collecting area below.
Engraving of Philadelphia

Early American History Collections

Detail of annotated map of interior Pacific Northwest

Indigenous Cultures, Anthropology, and Linguistics

19th-century laboratory

History of Science Collections

Portrait of Thomas Jefferson

Museum Collections