| United States -- History -- Civil War, 1861-1865 -- Statistics. Matches 2 items |
| United States -- History -- Civil War, 1861-1865 -- Study and teaching (Elementary) Matches 1 item |
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United States -- History -- Civil War, 1861-1865 -- Submarine operations. SEE: United States -- History -- Civil War, 1861-1865 -- Naval operations -- Submarine Matches 2 items
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| United States -- History -- Civil War, 1861-1865 -- Technology. Matches 2 items |
| United States -- History -- Civil War, 1861-1865 -- Theater and the war. Matches 1 item |
| United States -- History -- Civil War, 1861-1865 -- Transportation. Matches 6 items |
| United States -- History -- Civil War, 1861-1865 -- Trench warfare. Matches 1 item |
| United States -- History -- Civil War, 1861-1865 -- Underground movements. Matches 9 items |
| United States -- History -- Civil War, 1861-1865 -- Veterans. Matches 6 items |
| United States -- History -- Civil War, 1861-1865 -- Veterans -- Biography. Matches 2 items |