Two movable wall forms for lock construction

Photograph showing a ship downbound in the Poe Lock while two giant sections of wall forms are used in the construction of the neighboring lock. View is to southwest from the east end of the lock excavation.
Abstract/Description: Photograph showing a ship downbound in the Poe Lock while two giant sections of wall forms are used in the construction of the neighboring lock. View is to southwest from the east end of the lock excavation.
Subject(s): Boats and boating
Soo Locks (Mich.)
Date Created: 1911 (approximate)