Transmission tower and lines near Hoover Dam. Caption on top of postcard reads: "Boulder Dam power for Arizona! Towers like this will carry low-cost energy into Arizona when this state follows the example afforded by California and Nevada." Boulder Dam was officially re-named Hoover Dam in 1947.
A boat on the rising waters of Lake Mead near the intake towers of Hoover (Boulder) Dam shortly after the completion of construction. Boulder Dam was officially re-named Hoover Dam in 1947.
An image of Boulder Dam with open jet flow gates (outlet works). The name was officially changed to Hoover Dam in 1947. Bridge is visible in the foreground.