St. Marys Falls Canal, Michigan : lower approach to locks, Poe Lock at upper level, 3rd lock at lower level, "No. 1007" in photographic print., No Detroit Publishing Co. no., Gift; State Historical Society of Colorado; 1949, Locks (Hydraulic engineering) , United States, Michigan, Sault Sainte Marie. , United States, Michigan, Sault Sainte Marie Canal.

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Size: 2947px × 2375px
Photo credit: © piemags/LCB / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., locks, states--michigan--sault, united