Black and white image of the completed Hoover Dam with water seen spilling through the Arizona penstock outlets. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
From the Morgan Sweeney Photograph Collection (PH-00228). Unit A-4 turbine at the Hoover Dam, the boring mill in operation boring for lower stationary seal on September 17, 1951.
Duplicate images of visitors standing in line to board the visitors' elevator at Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.