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 | Annandale (Va.) (1) |
| | Antietam Creek Aqueduct, Md. (1) |
| | Big Pool (Md.) (1) |
| | Cherry Run,(Wv.) (1) |
| | Chesapeake and Ohio Canal (1) |
| | Cumberland (Md.) (16) |
| | Dickerson (Md.) (1) |
| | Ernstville (Md.) (2) |
| | Fort Frederick (Md.) (3) |
| | Green Ridge (4) |
| | Hancock (Md.) (3) |
| | Little Orleans (Md.) (10) |
| | Little Pool (2) |
| | Loudoun County (Va.) (1) |
| | North Branch, Rock Creek (Md.) (6) |
| | Oldtown (Md.) (10) |
| | Paw Paw Tunnel (11) |
| | Potomac River (7) |
| | Ridgeley (Wv.) (1) |
| | Shepherdstown (W. Va.) (3) |
| | Spring Gap (MD) (5) |
| | Sugarloaf Mountain (Md.) (1) |
| | Tonoloway Creek (2) |
| | Weverton (Md.) (1) |