An image of Rotary Club members listening to speeches during a luncheon at the Nevada viewpoint at Boulder Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of two men standing in front of penstock tunnel piping at the site of Hoover Dam construction. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of excavation activities at the bed of Hoover Dam. High scalers can be seen displaying their clinging skills on the walls of the Black Canyon. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of the downstream face of Hoover Dam in Black Canyon, showing diversion tunnel portals in the foreground. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Color image of Hoover Dam looking upstream and showing the white water of the Colorado River below the spillway tunnel outlets. Note: Boulder Dam was officially renamed Hoover Dam in 1947.