Historical Society of Pennsylvania

Founded in 1824 in Philadelphia, the Historical Society of Pennsylvania inspires people to create a better future through historical understanding. One of the oldest historical societies in the United States, it is home to some 600,000 printed items and more than 21 million manuscript and graphic items. Its unparalleled collections encompass more than 350 years of America’s history—from its 17th-century origins to the contributions of its most recent immigrants. The society’s remarkable holdings together with its educational programming make it one of the nation’s most important special collections libraries: a center of historical documentation and study, education, and engagement.

The society is one of the largest family history libraries in the nation, has preeminent printed collections on Pennsylvania and regional history, and offers superb manuscript collections renowned for their strength in 17th-, 18th-, and 19th-century history.