Black and white image of the Arizona-side generator room at Hoover Dam, as seen from the balcony at elevation 705. The 40,000 kilowatt ampere generator installed in unit 48 is visible in the background. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of boats used to transport men, powder, and supplies up and down the Colorado River in Black Canyon during the construction phase of the Boulder Canyon Project, better known as Hoover Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the construction phase of the Boulder Dam Project, also known as Hoover Dam. This image features Six Companies, Inc. employees aligning and oiling six miles of road down toward the upper portals on Hemenway Wash.
Black and white image of the construction phase of the Boulder Canyon Project, also known as Hoover Dam. Excavation for the Hoover Dam construction substation by the Nevada-California Power Company is visible. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of the Hoover Dam construction site at Black Canyon showing an upstream view during construction. This picture is one of several that cover the entire construction phase of the Hoover Dam from beginning on October 12, 1931, to completion on September 11, 1936. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of General Dwight D. Eisenhower (prior to becoming President) and Hoover Dam's Director of Power, Louis R. Douglass, talking while on the ramp of the dam's powerhouse.
A black and white image with the following printed description: Looking down the loading strip at Hemenway Wash, to Lake Mead where the many recreationists launch their boats for various water sports. One of the two boat docks is seen at the left of the strip.
Black and white aerial image of several high scalers at work at the Hoover Dam construction site, specifically in the location for the Arizona-side intake towers. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image of President Herbert Hoover and official party during an inspection tour of the Boulder Canyon Project. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Black and white image with the following printed description: "View showing extension work on Nevada Spillway Tunnel #2 at Hoover Dam. Work performed by Guy F. Atkinson Company of San Francisco, California." Note: Boulder Dam was officially renamed Hoover Dam in 1947.