Black and white image of the Black Canyon Reservoir site as seen from Monument Pass on the Nevada side of the Colorado River. This photograph was taken at 6:25 a.m.
Black and white image of the Boulder Canyon Dam "C" site. Written on the image are the dimensions of the canyon. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of Hoover Dam with the following printed description: "Rotating field for the generator for Unit N5 under erection. Field poles installed ready for testing." Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of Hoover Dam with the following description (provided by Special Collections): "View of bank 287.5 KVV transformers along the ramp of the Arizona powerhouse. April 1941." Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Looking down from the top of the canyon to the Colorado River. Some construction on the Hoover Dam is visible at the bottom near the water's edge. Site Name: Hoover Dam (dam)
Men go back to working on their tasks during the construction of the Hoover Dam. The large steel object behind them could possibly be a large train engine, evident by the tracks on the concrete floor.