- North Fork Mountain (W. Va.)1
- North Fork River (W. Va.)1
- North Kanawha Street (Beckley, W. Va.)1
- North Street (Morgantown, W. Va.)1
- Northwestern Turnpike (W. Va.)1
- Norton (Va.)2
- Novascotia Rocks (Elkins, W. Va.)1
- Nutter Fort (W. Va.)2
- Oak Hill (Fayette County, W. Va.)--Pictorial works.6
- Oak Mounds (W. Va.)1
- Oak Park (Preston County, W. Va.)5
- Oakford Park (Jeannette, Pa.)5
- Oakland (Md.)27
- Oglebay Park (Wheeling, W. Va.)7
- Ohio Avenue (Morgantown, W. Va.)1
- Ohio Avenue (Riverside, W. Va.)1
- Ohio Avenue (Westover, W. Va.)3
- Ohio River--Discovery and exploration.1
- Ohio River--Maps.2
- Ohio River--Pictorial works.3
