Night view during the construction of Boulder Dam, now called Hoover Dam, looking upstream from below the lower portals of the diversion tunnels. The canyon presents a spectacular sight at night, with its myriads of lights. Site Name: Hoover Dam (dam)
An image showing a street view of the visitors' elevator tower and Hoover Dam's crest. Caption on right side of image reads: Visitors elevator tower and crest of Boulder Dam. Boulder Dam was officially re-named Hoover Dam in 1947.
An image of completed power generators at Hoover Dam. Caption on image reads: "Interior of powerhouse at Boulder Dam, with six 115,000-H.P generators installed. Service Bureau photo." Boulder Dam was officially renamed Hoover Dam in 1947.