Places
- Maine -- Quoddy1
- Marengo County (Ala.) -- History1
- Martinsburg, (W. Va.) -- History -- Civil War, 1861-18651
- Mexican War, 1846-1848 -- Art and the war1
- Mississippi -- Washington County1
- Morris Island (S.C.)1
- New Market (Va.) -- History1
- New Market (Va.) -- History -- 19th century2
- New Market Battlefield Historical Park (Va.)7
- New York (State) -- Plattsburgh Barracks1
- Niagara Falls (N.Y. and Ont.)1
- Petersburg (Va.)2
- Philippines1
- Philippines -- Corregidor Island1
- Point Lookout Prison Camp (Md.)6