Black and white aerial view looking down Black Canyon at the Hoover Dam construction site. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of Hoover Dam's downstream side. Fortification Hill is visible in the background. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of Hoover Dam's crest and intake towers, as seen from the Arizona side. Note: Boulder Dam was officially renamed Hoover Dam in 1947.