20 records – page 1 of 2.
The beginnings of the petroleum industry, sources and bibliography
A checklist of Pennsylvania newspapers
Guide to the manuscript collections in the Historical society of ...
Guide to the published archives of Pennsylvania covering the 138 ...
Inventory of the county archives of Pennsylvania, Fayette County
Inventory of the county archives of Pennsylvania : Lancaster County, ...
Inventory of the county archives of Pennsylvania: Lehigh County
The Nanticoke Indians; a refugee tribal group of Pennsylvania
A partial bibliography of the archaeology of Pennsylvania and adjacent ...
Pennsylvania at war, 1941-1945