Region
Philadelphia (Pa.)
4
Delaware
3
Soviet Union
3
United States
3
Altoona (Pa.)
2
Boston (Mass.)
2
Elmira (N.Y.)
2
Greenwood Furnace State Park (Pa.)
2
Huntingdon County (Pa.)
2
Milroy (Pa.)
2
New Cumberland (Pa.)
2
Pennsylvania
2
Allegheny County (Pa.)--History
1
America
1
Amérique
1
Boston
1
Cambria County (Pa.)--History
1
Cambria County (Pa.)--Maps
1
Camden
1
Crawford County (Pa.)--History
1
Delaware River
1
Delaware River (N.Y.-Del. and N.J.)
1
Erie County (Pa.)--History
1
Erie County (Pa.)--Maps
1
États-Unis
1
Fairmount Park (Philadelphia, Pa.)
1
Indiana County (Pa.)--History
1
Indiana County (Pa.)--Maps
1
Kansas--History--1854-1861
1
Massachusetts
1
North America
1
Pennsylvania--Commerce
1
Pennsylvania--Politics and government
1
United States--History--Civil War, 1861-1865
1
United States--Politics and government
1
Utah--History--Civil War, 1861-1865
1