The Leon Rockwell Photograph Collection (approximately 1850-1979) contains black-and-white photographic prints, negatives, and slides, as well as postcards and tintypes. The images portray the lives of the Rockwell family in southern Nevada, their travels throughout New York and the western United States, and their immediate and extended family members. Also included are images of the volunteer and early firefighters of Las Vegas, Nevada, the Rockwell's family cabin at Mount Charleston, Nevada, and the Rockwell family home in Las Vegas. Portions of the images are from the Rockwell family travels across Nevada, Utah, New Mexico, Arizona, and California and depict historic locations such as Cove Fort, Utah; Rhyolite, Nevada; and Pueblo Grande de Nevada.

The Pueblo Grande de Nevada Photograph Collection (approximately 1920-1980) contains black-and-white photographic prints, negatives, and slides depicting archaeological sites located in Overton, Moapa, Valley of Fire, Red Rock, Pyramid Lake, Kane Springs, Virgin River, the “Lost City,” and Lake Mead, Nevada. Images display the different stages of digging during the archaeological excavation of Pueblo Grande de Nevada. Also included are images showcasing artifacts uncovered during the excavations, the Saint Thomas, Nevada and the flooding of archaeological sites after the construction of the Hoover (Boulder) Dam.