Weitzel Lock, Sault Ste. Marie, Mich., Title from jacket., "G 2234" on negative., Detroit Publishing Co. no. 033736., Gift; State Historical Society of Colorado; 1949, Christie (Freighter) , Locks (Hydraulic engineering) , Whalebacks. , Cargo ships. , United States, Michigan, Sault Sainte Marie. , United States, Michigan, Sault Sainte Marie Canal.

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