Philander Chase Knox Estate
Valley Forge NHP
Open All Year by Appointment
Yellow Springs Road
All Federal Holidays and Weekends
The Philander Chase Knox Estate currently houses the Horace Wilcox Library, a research library open to the public by appointment. The collection's emphasis is on the Revolutionary War era, in particular the Valley Forge encampment of 1777-1788. Materials on the political, social and industrial history of the Valley Forge area are also available.