Subject Geographic
- Monongahela (Pa.)--History--To 1908.1
- Monongahela National Forest (W. Va.)--Environmental conditions.1
- Monongahela National Forest (W. Va.)--Maps.1
- Monongahela National Forest (W. Va.). Beaver Tale Trail.1
- Monongahela National Forest (W. Va.). Blue Bend Recreation Area.1
- Monongahela National Forest (W. Va.). Camp Allegheny.1
- Monongahela National Forest (W. Va.). Falls of Hills Creek Scenic Area.1
- Monongahela National Forest (W. Va.). Smoke Hole Recreation Area.1
- Monongahela National Forest (W. Va.). Stuart Recreation Area.1
- Monongahela River (W. Va. and Pa.)--Description and travel.1
- Monongahela River (W. Va. and Pa.)--Environmental aspects.1
- Monongahela River (W. Va. and Pa.)--Navigation--History.1
- Monongahela River (W. Va. and Pa.)--Navigation.1
- Monongahela River (W. Va. and Pa.)--Periodicals.1
- Monongahela River (W. Va. and Pa.)--Surveys.1
- Monongahela River Bridge (Fairmont, W. Va.)1
- Monongahela River Valley (W. Va. and Pa.)--Economic conditions--1945-1
- Monongahela River Valley (W. Va. and Pa.)--Economic conditions--1945- --Periodicals.1
- Monongahela River Valley (W. Va. and Pa.)--Economic conditions--1993-1
- Monongahela River Valley (W. Va. and Pa.)--Economic conditions.1