The George Kelly Ryan Photograph Collection (1929) depicts waterways in Southern Nevada and Northern Arizona. The collection consists of eight photographic prints and two photographic negatives depicting Saint Thomas, Black Canyon, Boulder Canyon, and the Colorado River.

The Nye County, Nevada Photograph Collection contains photographs from Nye County, Nevada from 1880 to 1990. The collection includes a wide variety of photographs that document the activities, landmarks, geographical features, towns, ranches, and families of Nye County. The collection covers the areas of Amargosa Valley, Ash Meadows, Beatty, Duckwater, Gabbs, Goldfield, Kawich Mountains, Manhattan, Pahrump, Round Mountain, Rhyolite, Smoky Valley, Springdale, Tecopa, Tonopah, and Twin Springs. The activities documented include mining, prospecting, herding animals, schooling, ranching, building construction, railroad construction, and hunting and fishing.

The Nevada Consolidated Copper Company Photograph Albums (1906-1907) contain two photograph albums from the mining company's chief engineer's office. The photograph albums include cyanotype and black-and-white photographs depicting the construction of the smelting plant, equipment, railroad, and landscape of Ruth, Nevada.

The George Kelly Ryan papers (1921-1971) contain correspondence inquiring about Octavius Decatur "O. D." Gass, newspaper clippings from 1929, handwritten recollections of the Gold Ranch by Laura Royce, and a San Pedro, Los Angeles and Salt Lake Railroad Company information, including information on wash-outs in Nevada.

The Robert B. Griffith Collection (1928-1975) documents the work of Robert B. Griffith, an instrumental figure in the development of water resources in Las Vegas, Nevada, as well as the creation of McCarran International Airport and Nellis Air Force Base. The collection consists of Colorado River Commission papers, 1928 International Air Race documents, general correspondence, a feasibility study, an airport guide, American Legion papers, the memoirs of Alfred Merritt Smith, and death and burial records belonging to his father. The collection also includes slides from various countries, including the United States, Canada, Europe, Asia, and the Middle East.

The McCall Family Papers are comprised primarily of family photographs and correspondence from 1910-1970. The materials concentrate on Quannah McCall and his daughter, Connie McCall, both were well known dentists in Southern Nevada. The materials also contain letters, postcards, holiday cards, and birth, death, and marriage certificates, as well as school commencement announcements for family members.

The Bureau of Reclamation Photographs of the Hoover Dam and Boulder City, Nevada depict the construction of the Hoover (Boulder) Dam and the development of Boulder City, Nevada from 1869 to 1974, with a bulk of the materials dating from 1929 to 1940. The photographs primarily depict the construction operations in Black Canyon, including digging tunnels, pouring concrete, building the power plant, and inspections by Bureau of Reclamation engineers. The photographs also depict Boulder City, including schools, workers, and dormitories. The collection also includes photographs of St. Thomas, Nevada, Lake Mead, Nelson’s Landing, Nevada, and an archaeological excavation near Lake Mohave, Nevada.