Black and white image of Hoover Dam visitors standing near freight car tracks, which were used to lower generators and related equipment to the power house. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of power generators at Hoover Dam. Caption on image reads: "Interior of powerhouse at Boulder Dam, with six 115,000-H.P generators installed. Service Bureau photo." Boulder Dam was officially renamed Hoover Dam in 1947.
Welding/Blacksmith shop on Arizona side of Hoover Dam. Note on back: "Men sharpening steel tools; pieces 4 to 20 ft. long. Were mostly all star bits. No welding done here. Ingersollrand (Ingersoll-Rand?) equipment sharpening station. - W. A. Davis."
Black and white image of crowds waiting to visit the Hoover Dam power plant on Memorial Day in 1937. Many people are holding tickets ready for the guide to collect. The roof of the cashier's booth is visible beyond the awning. Note: Boulder Dam was officially renamed Hoover Dam in 1947.