The antiquities photographs depict Native American petroglyphs and Native American baskets collected by Helen J. Stewart from approximately 1900 to 1930.

The early Las Vegas, Nevada photographs depict the city of Las Vegas from approximately 1890 to 1940. The photographs primarily depict hotels, freight teams, and early businesses in the city. The items described include photographic prints and postcards; items listed are photographic prints unless otherwise specified.

The locations in the Southwest United States photographs depict settlements and mining operations in Nevada, California, and Arizona from approximately 1860 to 1940. The photographs include the Colorado River, Goldfield, Nevada, desert landscapes, railroad surveyors, workers, and Native Americans.