Subject
- Railroads32
- Battlefields30
- New York (State). Militia. Regiment, 22nd30
- Boats29
- Turret ships29
- Churches28
- Pontoon bridges28
- Bridges27
- Physicians26
- Carts & wagons25
- Infantry24
- Railroad bridges22
- Streets20
- Mountains19
- United States. Army. Rhode Island Infantry Regiment, 2nd (1861-1865)19
- Dead persons18
- Decks (Ships)18
- Artillery (Troops)17
- Shelters17
- United States. Army of the Potomac17