Black and white image of Hoover Dam under construction in Black Canyon. Arizona and Nevada can be seen on either side of the dam in this picture. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image showing a bird's eye view of Hoover Dam from the Arizona side, featuring intake towers. Boulder Dam was officially renamed Hoover Dam in 1947.
From the Morgan Sweeney Photograph Collection (PH-00228). Hoover Dam switchyard, circa 1950s. Stamp on the back reads, "Photograph by Bureau of Reclamation BCP 9187 Boulder Canyon Project Boulder City, Nevada."