Black and white image of Black Canyon during the construction of Hoover Dam. Cable way elevators which transported the fathers of Hoover Dam to and from work can be seen, along with a pilot house on the Nevada side of the canyon. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image of Walker R. Young (right) and an unidentified individual standing beside a Department of the Interior/Bureau of Reclamation vehicle. Young was chief construction engineer on the Hoover Dam Project (Boulder Canyon Project) for the Bureau of Reclamation. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image of Hoover Dam with the following printed description: "Upstream face of the dam as seen from portal of construction tunnel on Nevada side of Black Canyon." Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image showing an upstream view of Black Canyon from the Hoover Dam construction site. In the distance, Fortification Hill can be seen along with tunnel lining forms near the inlet portals of the Nevada diversion tunnels. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Black and white image of a crowd of people gathered together for the Boulder Junction, a ceremony celebrating the beginning of work on Boulder Canyon Project and the beginning of construction on a Union Pacific Railroad from Boulder Junction (Bracken Junction) to the dam site. Note: Boulder Dam was officially renamed Hoover Dam in 1947.

Panoramic view of houses from the water tank in Boulder City. This photo was taken between December 15, 1933 and June, 1934. Buildings that can be seen include City Hall (left), the Boulder Theater building (center), the Boulder Dam Hotel (right), and the Terminal Building with the Boulder Cafe (right).