"Whaleback" leaving Poe Lock, Sault Ste. Marie, Michigan, In album prepared by Detroit Photographic Co. to use as a catalog in its office., Detroit Publishing Co., no. 53442., Gift; State Historical Society of Colorado; 1955, Whalebacks. , Locks (Hydraulic engineering) , United States, Michigan, Sault Sainte Marie. , United States, Michigan, Sault Sainte Marie Canal.

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Photo credit: © piemags/LCB / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., locks, states--, united, whalebacks.