Region
United States--History--Civil War, 1861-1865
3
Philadelphia (Pa.)
2
Chickamauga, Battle of, Ga., 1863
1
Dalla, Battle of, Ga., 1864
1
Hoosac Tunnel (Mass.)
1
Kansas--History--1854-1861
1
Newtown (Bucks County, Pa.)
1
Pennsylvania--Politics and government
1
Puerto Rico--History
1
Selma, Battle of, Ala., 1863
1
United States--Foreign relations--Mexico
1
United States--History--Civil War, 1861-1865--Campaigns & battles--Virginia
1
United States--History--Civil War, 1861-1865--Maps
1
United States--History--Civil War, 1861-1865--Military tactics--Union
1
United States--History--Civil War, 1861-1865--Transportation
1
United States--Politics and government
1
Utah--History--Civil War, 1861-1865
1