An image of Rotary Club members listening to speeches during a luncheon at the Nevada viewpoint at Boulder Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of two unidentified men shaking hands during the decennial ceremony in an auditorium at Boulder Dam. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An artist's color rendering of Hoover (Boulder) Dam construction midway through progress. Printed text on front of postcard: "Looking upstream, Colorado River, Boulder Dam."