The Boulder City 31ers Photograph Collection depicts the construction of the Hoover (Boulder) Dam and the development of Boulder City, Nevada from 1930 to 1987. The photographs primarily depict construction of the Hoover Dam, but they also depict workers, dormitories, the Colorado River, stores, and Black Canyon.
Description printed on photograph's accompanying strip of paper: "Hughes catches up with cables in Moscow. Moscow---Howard Hughes, sorting a packet of congratulatory cables on his arrival in Moscow. He was just beginning to sprout stubble with which he returned to New York, after his record-smashing round-the-world dash. 7/25/38"