Oversized postcard with three scenes from Hoover Dam: people standing in front of the downstream face of the dam; automobile traffic on the dam crest, showing the tops of two of the intake towers; the downstream face of the dam and the power houses. Caption: "Greetings from the world's highest dam, Hoover Dam." On back: "P29348. Plastichrome by Colourpicture Publishers, Inc., Boston, Mass."