75 Years Since The Completion Of The Hoover Dam

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Black Canyon on the Boulder river in Colorado before work starts on... News Photo1930-1939,Archival,Arts Culture and Entertainment,Beginnings,Black And White,Black Canyon,Boulder River,Colorado,Construction Industry,Consumerproduct,Finance,Fuel and Power Generation,Hoover Dam,Horizontal,Landscape,No People,North America,River,USA,WorkingPhotographer Collection: Hulton Archive Black Canyon on the Boulder river in Colorado before work starts on the construction of the Boulder Dam. (Photo by General Photographic Agency/Getty Images)