The Hoover Dam photographs depict the Hoover (Boulder) Dam on the Colorado River from approximately 1928 to 1961. The photographs depict its construction and surrounding areas, including the Colorado River, Lake Mead, Black Canyon, Boulder Canyon, Boulder Highway, and Boulder City, Nevada. The photographs also depict construction crews, machinery, and the completed dam. The items described include photographic prints and negatives; items listed are photographic prints unless otherwise specified.

The Boulder City, Nevada photographs depict the city of Boulder City, Nevada from approximately 1930 to 1990. The photographs primarily depict the citizens of Boulder City at social or political events. The photographs also include Nevada politicians such as United States Senator Howard Cannon and United States Representative James Santini.

The people in the American Southwest photographs series depict people in locations throughout the American Southwest from 1939 to 1980. The locations include a town in Nevada; Berkeley, Van Nuys, and Escondido, California; and the Davis Dam in Arizona.