Pinhole view of the Hoover Dam area looking west. The U.S. Construction Railroad and the Black Canyon highway is depicted in the foreground of the photograph.
Water gushing at the Hoover Dam when it was called the Boulder Dam. In 1947 it was renamed the Hoover Dam. Written at the top of the photo: "BDRA. Nev. 4.36 342." Site Name: Hoover Dam (dam)
The LeTourneau Construction Company building Black Canyon Highway to Hoover Dam site near Boulder City, Nevada. Image was taking in the summer of 1931.