The Human Radiation Experiments Records (1949-1995) contain reports from the National Environmental Policy Act (NEPA), the Advisory Committee on Human Radiation Experiments (ACHRE), and the U. S. Department of Energy (DOE). Also included are newspaper clippings, a court case brought by the National Association of Radiation Survivors (NARS), and cancer research papers. With the goal of building an atomic bomb using plutonium extracted from uranium, the material also examines the outcomes of radiation exposure done on humans during the late 1940s and early 1950s at the Oak Ridge Nuclear Facility in Tennessee.

Papers are comprised of photographs, newspaper clippings, and correspondence dating from the 1950s to the 1980s collected by Steven Hart, son of the Las Vegas, Nevada chef, Nat Hart. The papers include information about Steven Hart's childhood and his service in Vietnam. Also included in the collection are photos of Steven Hart's father, Nat Hart.

The Gilbert Buck Papers (1930-1986) focus on Buck's work as a surveyor and real estate broker in southern and central Nevada. Included are master reports, designs, standards, flood and drainage reports, and land specifications on water, sewer, and public lands. Papers regarding real estate include reports, housing and mobile home development plans, newsletters, surveys, and Buck Realty negotiations. There are books and information on seminars Gilbert Buck hosted in Las Vegas, Nevada on investing in raw land. Also included are awards, correspondence, newsletters, a scrapbook of Buck's early life, and information on his campaign for governor of the state of Nevada in 1974. There is include some documentation of Buck's real estate and mining interests in South America.

The Chip Johnson Collection of Hoover Dam Photographs (approximately 1930-1936) consist of sixteen black-and-white photographs that depict the construction of Hoover Dam and the surrounding area. The photographs were taken by an unknown photographer.