A black and white image of several unidentified men and women associated with the Rotary Club attending the Boulder Dam decennial (officially renamed Hoover Dam in 1947).
Aerial view of Hoover Dam and Lake Mead in Black Canyon, taken from the dam's downstream side. The intake towers and electric power transmission towers are seen. Typed label on back of photograph: "Down-stream face - Boulder Dam."
Black and white image of Hoover Dam with the following printed description: "Evaporation tower for dam precooling system located on downstream cofferdam. View from Nevada outlet house bench." Note: Boulder Dam was officially renamed Hoover Dam in 1947.