Excavation of approach canal to Soo Locks (1 of 3)

Photograph showing excavation of the north approach canal for the third and fourth locks. View is looking west, and the cofferdam appears in the background.
Abstract/Description: Photograph showing excavation of the north approach canal for the third and fourth locks. View is looking west, and the cofferdam appears in the background.
Subject(s): Boats and boating
Soo Locks (Mich.)
Date Created: 1911 (approximate)