Region
Philadelphia (Pa.)
4
Altoona (Pa.)
2
Elmira (N.Y.)
2
Greenwood Furnace State Park (Pa.)
2
Huntingdon County (Pa.)
2
Milroy (Pa.)
2
New Cumberland (Pa.)
2
United States--Politics and government--1861-1865
2
Fairmount Park (Philadelphia, Pa.)--History--Pictorial works
1
Hoosac Tunnel (Mass.)
1
North Tyneside (England)
1
Philadelphia (Pa.)--Commerce
1
Philadelphia (Pa.)--Economic conditions--20th century
1
Philadelphia (Pa.)--Social life and customs--19th century
1
Philadelphia (Pa.)--Social life and customs--20th century
1
Scotland
1
United States--Foreign relations--Mexico
1
United States--History--Civil War, 1861-1865
1
United States--History--Civil War, 1861-1865--Transportation
1
United States. Navy
1
Williamsport (Pa.)
1
Youngstown (Ohio)
1