17 records – page 1 of 2.
Archaeology of Delaware river valley between Hancock and Dingman's ferry ...
The beginnings of the petroleum industry, sources and bibliography
A checklist of Pennsylvania newspapers
Conserving Pennsylvania's historic past
The expedition of Baron de Longueuil : a preliminary report ...
Inventory of the county archives of Pennsylvania: Lehigh County
A partial bibliography of the archaeology of Pennsylvania and adjacent ...
Pennsylvania history and morale
Pennsylvania's first year at war, December 7, 1941-December 7, 1942
Remember William Penn, 1644-1944