Compensating Gates, St. Mary's River

Cyanotype photograph of the compensating headgates above (west) of the locks, St. Mary's River, Sault Ste. Marie, Michigan.
Abstract/Description: Cyanotype photograph of the compensating headgates above (west) of the locks, St. Mary's River, Sault Ste. Marie, Michigan.
Subject(s): Boats and boating
Soo Locks (Mich.)
Date Created: 1880 (approximate)