Navigation on our three rivers.

Creator Corporate Names:

United States. Army. Corps of Engineers. Pittsburgh District.

Title:

Navigation on our three rivers.

Call Number:

P21113

Date:

undated

Description:

Brochure.

Subject Topical:

Locks (Hydraulic engineering)--Allegheny River (Pa. and N.Y.)--Maps., Locks (Hydraulic engineering)--Monongahela River (W. Va. and Pa.)--Maps., Dams--Pennsylvania--Pittsburgh Region--Maps., Dams--Monongahela River (W. Va. and Pa.)--Maps., Locks (Hydraulic engineering)--Pennsylvania--Pittsburgh Region--Maps., Dams--Ohio River--Maps., Locks (Hydraulic engineering)--Pennsylvania--Pittsburgh Region--Pictorial works., Locks (Hydraulic engineering)--Ohio River--Maps., Dams--Allegheny River (Pa. and N.Y.)--Maps., Boats and boating--Pennsylvania--Pittsburgh Region--Maps.