Black and white image of Hoover Dam with the following printed description: "Looking upstream through Nevada spillway. Overflow weir under construction at right, completed section of channel lining and parapet at left." Note: Boulder Dam was officially renamed Hoover Dam in 1947.
There are two pictures together: the first one is titled, "Pouring the first concrete in Boulder Dam June 1933" and the second image is titled, "Spreading the first concrete in Boulder Dam June 6, 1933." Site Name: Hoover Dam (dam)