Black and white image of Hoover Dam with the accompanying description: "Placing concrete in block at mid-section of Dam. Eight cu. yd. bucket handled by cableway is in use." Note: Boulder Dam was officially renamed Hoover Dam in 1947.
Caption on right of postcard reads: " The Nevada wing of Boulder Dam power house as seen from visitors' gallery." Boulder Dam was officially re-named Hoover Dam in 1947.
Officials in the field conducting a land survey for the Hoover Dam project. From left to right, the men include McDowell, U.S. Reclamation Service Engineer R. C. Thaxton, and Superintendent of Construction for the Six Companies Frank T. Crowe.
A black and white image of Boulder Dam's Winged Figures of the Republic statues with a dedication plaque in between; two unidentified people are walking in front of the structure. Boulder Dam was officially renamed Hoover Dam in 1947.