The Yucca Mountain Site Characterization Office collection (1958-2001) was assembled through a joint effort between the Nuclear Regulatory Commission (NRC) and the James R. Dickinson Library, University of Nevada, Las Vegas (UNLV) to provide public access to documentation and correspondence about the proposed high-level radioactive waste geologic repository site near Yucca Mountain, Nevada. Materials include technical reports, contractor reports, public hearing transcripts, safety evaluation reports, environmental impact statements, emergency plans, inspection reports, licensee event reports, and general communications. The collection includes documents from several other government entities such as the Yucca Mountain Site Characterization Office, Department of Energy, Office of Civilian Radioactive Waste Management (OCRWM), Nevada Nuclear Waste Storage Investigations (NNWSI), United States Geological Survey (USGS), Sandia National Laboratories, Lawrence Livermore National Laboratory, and Los Alamos National Laboratory.

The Gene Hertzog Professional Papers (approximately 1930-2015) are comprised of photographs, slides, transparencies, publications, video cassettes, correspondence, and digital files spanning Gene Hertzog's working years with the United States Army, the Bureau of Reclamation, and as a freelance photographer and videographer based in Southern Nevada, New Mexico, and Washington state. The collection documents the complicated infrastructure required to supply water to the Las Vegas Valley and includes still and moving images of the Springs Preserve, Lake Mead National Recreation Area, the Colorado River, and the Columbia Basin. The majority of the collection comes from Hertzog's time as a regional photographer for the Bureau of Reclamation and offers a unique glimpse into the Bureau's work in Southern Nevada, the southwest, and the Pacific Northwest from the 1950s to the mid-1990s.