Wall form framework, Soo Locks (2 of 4)

Photograph showing the wall form framework with the two men atop, which shows the size of the wall being poured, at the east end of the lock chamber.
Abstract/Description: Photograph showing the wall form framework with the two men atop, which shows the size of the wall being poured, at the east end of the lock chamber.
Subject(s): Boats and boating
Soo Locks (Mich.)
Date Created: 1912 (approximate)