Places
- Maryland1
- Mathews County (Va.)--History1
- Mecklenburg County (Va.)--History1
- Mexico1
- Mexico--Maps1
- Middlesex County (Va.)--History1
- Mississippi--History--19th century1
- Missouri2
- Monongah (W. Va.)1
- Monongalia County (W. Va.) -- History1
- Montgomery County (Va.)1
- Montgomery County (Va.)--History1
- Morgantown (W. Va.)1
- Mount Vernon (Va. : Estate)2
- Mt. Clifton (Va)1