The Southern Nevada Chapter of the American War Mothers Organization Records (1947-1995) are comprised primarily of scrapbooks containing correspondence and minutes, numerous newspaper clippings, and photographs. Also included are pamphlets on American War Mothers organizational rituals, bylaws, history, ceremonial ephemera, flags, and a Henderson Chapter Charter. The materials also contain items relating to the North Las Vegas Chapter, the Rose Garden Chapter, and the State Chapter.

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.

The Klai Juba Wald Architectural Records (2000-2020) are comprised primarily of digital architectural renderings for projects completed by Las Vegas, Nevada architecture and interior design firm Klai Juba Wald Architecture + Interiors. The collection is comprised of renderings for the firm's projects conducted mainly around Las Vegas, but also includes projects around the United States such as the Seminole Hard Rock Hotel and Casino in Florida and Rivers Casino in Illinois. Also included are master plans and presentation slides for projects like the Choctaw Casino in Oklahoma and Live! Casino & Hotel in Maryland. Master plans for projects in Las Vegas include the LINQ, Silverton Casino Hotel, and Hard Rock Las Vegas.

The Chester Longwell Photograph Collection consists of 608 black-and-white photographic prints dating from approximately 1910 to 1930. The images primarily depict the Longwell family's excursions in the Southern Nevada region, primarily to Mount Charleston, Nevada. Also included are images of Southern Nevada mines and mining towns, as well as Pubelo Grande de Nevada, the Lost City. The remaining images depict geological formations and features, as well as forestry and nature scenes in Nevada and Arizona.

The Sister Klaryta Antoszewska Photograph Collection (1977-1991) consists of photographic slides that depict various Nevada, United States, and international nuclear test protests. The collection includes images of Sister Klaryta Antoszewska and Sister Rosemary Lynch, as well as images of the Lenten Desert Experience and numerous protests at the Nevada Test Site. Also included are images of nuclear testing, soldiers, and anti-nuclear testing promotional materials.

The collection is comprised of architectural drawings (1952-1997) completed by American architect, Ethan Jennings Jr. and/or his architectural firm, Ethan Jennings Jr., AIA, CSI and includes Jenning's work from the firm of John Badgley, AIA, where Ethan Jennings Jr. worked in Southern California during the 1950s, as well as work Jenning's completed with Americo Inc., and Tolosa Group. The collection contains 217 sets of drawings, 6 boxes of project records, and 8 flat files of oversized material from over 200 different projects primarily located in California with some projects located in the Las Vegas area. The materials feature hand-drawn architectural drawings, ranging from preliminary sketches to construction documents. The drawings also contain work from consultants, engineers, and other architects who collaborated on the development of the various projects. The drawings include: commercial, industrial, professional, civic, residential, and religious buildings of varying scales, such as libraries, apartments, warehouses, office developments, schools, military buildings, churches, and custom single-family homes located throughout California and Las Vegas. The drawings also include a number of additions, remodels, and renovations. The collection also contains project records like structural calculations and drawings, project manuals and specifications, bid documents, and professional correspondence.