Whaleback Str. Thompson sic, "G 2234" on negative., Detroit Publishing Co. no. 022144., Gift; State Historical Society of Colorado; 1949, Thomson (Whaleback) , Whalebacks. , Locks (Hydraulic engineering)

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Photo credit: © piemags/LCB / Alamy / Afripics
License: Licensed
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Keywords: (hydraulic, ., .., engi, locks, thomson, whalebacks.