Region
Allegheny County (Pa.)--History
1
Bucks County (Pa.)
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
Pennsylvania--Commerce
1
Pennsylvania--Social life and customs
1
Philadelphia (Pa.)
1
Philadelphia (Pa.)--Commerce
1
Philadelphia (Pa.)--Social life and customs--19th century
1
Roxborough (Philadelphia, Pa.)
1