Black and white photographic image of the visitors' gallery inside Hoover Dam's power plant. Written on the front of the postcard: "Visitors gallery, power plant, Boulder Dam."
An image of two men and a woman standing in front of the Boulder Dam Visitors Bureau, located on Arizona Street in Boulder City. Seated across the street and reflected in the Visitors Bureau's window is the Boulder Theatre at 1225 Arizona Street. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
The Six Companies, Inc. Hoover Dam Photograph Collection (1931-1935), consists of approximately 400 black-and-white photographic prints contained in two photograph albums and an additional twenty-one loose black-and-white photographic prints with ten corresponding photographic negatives.
A black and white image of unidentified people posing for a group photograph on top of the Boulder Dam powerhouse (officially renamed Hoover Dam in 1947).