An image from one of the Hoover Dam spillways of the dam face, intake towers and electric transmission towers in Black Canyon. Note: 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."