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."
A colored postcard portraying an artist's rendering of a Hoover (Boulder) Dam interior. Printed on the top border of the card: "Entrance to one of the four 56 foot diversion tunnels, Boulder Dam Project." Handwritten text on back of card.
Black and White photographic postcard showing construction workers, cranes, and cement forms on Hoover (Boulder) Dam. Text on front of postcard: "Boulder Dam- Jan. 1934."
Photographic postcard showing the newly completed Hoover Dam and intake towers. Description given on bottom of photograph: "Boulder Dam upstream face and intake towers. Note newly constructed Highway which connects Kingman, Arizona with Boulder City, Nevada."