An image of four men (including Governor Herbert Ham) listening to a speech during the Boulder Dam decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of Governor Herbert Ham and an unidentified man at the Boulder Dam decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of airplanes flying over Boulder Dam and spelling the word "NAVY" for the dam's decennial. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of airplanes flying over Boulder Dam and spelling the word "NAVY" for the dam's decennial. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of airplanes flying over Boulder Dam and spelling the word "NAVY" for the dam's decennial. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of film crews and photographers at Boulder Dam on the day it was dedicated by President Franklin Delano Roosevelt. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of film crews and photographers at Boulder Dam on the day it was dedicated by President Franklin Delano Roosevelt. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of a film crew shooting penstock valves while they were open for the Boulder Dam dedication. Note: Boulder Dam was officially renamed Hoover Dam in 1947.