An image showing a bird's eye view of Hoover Dam from the Arizona side, featuring intake towers. Caption on bottom right of image reads: "Upstream face of Boulder Dam showing intake towers and Arizona observation point. [Copyright] BDSB." Boulder Dam was officially renamed Hoover Dam in 1947.
Panoramic image of Hoover (Boulder) Dam construction, early evening view, November 1933. Lights line the canyon walls as workers proceed with construction. Bright white light in the sky may possibly be a full moon.