Region
Pennsylvania
3
Allegheny County (Pa.)--History
1
Cambria County (Pa.)--History
1
Cambria County (Pa.)--Maps
1
Crawford County (Pa.)--History
1
Erie County (Pa.)--History
1
Erie County (Pa.)--Maps
1
Indiana County (Pa.)--History
1
Indiana County (Pa.)--Maps
1
Philadelphia
1
Philadelphia (Pa.)--History--Revolution, 1775-1783
1