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.
Typed onto a piece of paper attached to the image: "Hughes and Flyers Welcomed to Chicago - A view of the parade staged in honor of Howard Hughes and his four companions passing down La Salle Street, Chicago, in a shower of ticker-tape and paper. The flyers, who circled the globe in 3 days and 19 hours, are in the first three autos. Credit Lines (ACME) 7/30/38 (NY)."