An image of Boulder Dam with open jet flow gates (outlet works). The name was officially changed to Hoover Dam in 1947. Bridge is visible in the foreground.
Black and white photographic postcard of Hoover (Boulder) Dam outlets. Printed text on front of ppostcard: "Water discharge from both Arizona and Nevada canyon wall outlets, Boulder Dam."
An image showing a bird's eye view of visitors peering over a lookout point at Hoover Dam. Boulder Dam was officially renamed Hoover Dam in 1947. Caption on bottom of image reads: "Lookout Point - Hoover Dam - 293 Oakes."
Black and white image of an aerial view looking upstream through the Nevada spillway. At the left are two panels of the overflow weir under construction. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of an unidentified man standing on power generator equipment in the powerhouse at Hoover Dam. Boulder Dam was officially renamed Hoover Dam in 1947.
An image of visitors posing in the gallery leading from the elevator to the Hoover Dam powerhouse. Boulder Dam was officially renamed Hoover Dam in 1947.
An image of visitors standing in the gallery leading from the elevator to the Hoover Dam powerhouse. Boulder Dam was officially renamed Hoover Dam in 1947.