An image of the downstream face of Hoover Dam including the powerhouse and one of the diversion tunnel portals. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the construction phase of Hoover Dam. The metal framework seen at the base of the dam will later become the dam's powerhouse. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the construction phase of Hoover Dam. The metal framework seen at the base of the dam will later become the dam's powerhouse. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of an interior view of the Hoover Dam powerhouse under construction. Caption on bottom of image reads: "Interior of power house. Boulder Dam. Nevada." Boulder Dam was renamed Hoover Dam in 1947.
Gantry Crane transporting 4 cubic yard Rex motor mixers in pouring tunnel lining during the construction of Boulder Dam, now called Hoover Dam. Site Name: Hoover Dam (dam)
Temporary cable-way spanning the Colorado River, near Look-Out Point, providing access to the Arizona Spillway operations during construction of the Hoover Dam. Site Name: Hoover Dam (dam)