Search Constraints
You searched for:
All Creators
United States. Army. Corps of Engineers. Pittsburgh District.
Remove constraint All Creators: United States. Army. Corps of Engineers. Pittsburgh District.
All Subjects
Dams--Monongahela River (W. Va. and Pa.)--Maps.
Remove constraint All Subjects: Dams--Monongahela River (W. Va. and Pa.)--Maps.
Subject Topical
Dams--Allegheny River (Pa. and N.Y.)--Maps.
Remove constraint Subject Topical: Dams--Allegheny River (Pa. and N.Y.)--Maps.
Subject Topical
Dams--Pennsylvania--Pittsburgh Region--Maps.
Remove constraint Subject Topical: Dams--Pennsylvania--Pittsburgh Region--Maps.
Subject Topical
Locks (Hydraulic engineering)--Pennsylvania--Pittsburgh Region--Maps.
Remove constraint Subject Topical: Locks (Hydraulic engineering)--Pennsylvania--Pittsburgh Region--Maps.
1 entry found