Places
- Logan County (W. Va.)1
- Mabscott (W. Va.)1
- Marietta (Ohio)1
- Marion County (W. Va.)2
- Martinsburg (W. Va.)1
- Mason County (W. Va.)1
- Mill Creek.1
- Mississippi River2
- Monongahela River (W. Va. and Pa.)2
- Monongahela River Valley (W. Va. and Pa.)2
- Monongalia County (W. Va.)2
- Monroe County (W. Va.)1
- Morgantown (W. Va.)2
- Nutter Fort (W. Va.)1
- Ohio County (W. Va.)1