Search for all of "Colorado River", all of "Buildings And Structures", all of "Hoover Dam ariz And Nev -- Design And Construction"

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51. Construction of Hoover Dam 		Object thumbnail
52. Aerial view -- Hoover Dam construction 		Object thumbnail
53. Hoover Dam construction, looking upstream
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54. Construction on Hoover Dam, looking downstream on the Colorado River 		Object thumbnail
55. Bridge across Boulder Canyon at Hoover Dam site.
 

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