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.

The Carolyn Merriam Collection on the Sands Hotel (1972-1998) consists primarily of Sands Hotel merchandise and ephemera, including mugs, glassware, playing cards, dice, an ashtray, and a tote bag. The collection also contains several framed photograph reproductions depicting Las Vegas, Nevada in the 1950s and 1960s. The Sands Hotel operated in Las Vegas, Nevada from 1952 to 1996.

The Alice Key Photograph Collection (1930s-1990s) is comprised of color and black-and-white photographic prints of activist, dancer, and journalist Alice Key with family, friends, political figures, and performers. Materials include photographs of Senator Howard Cannon, Louis Armstrong, and Bill Robinson, and signed professional head shots. Also pictured are Key's coworkers and unidentified performers.

The Jay Sarno Photograph Collection (1947-1983) contains photographs from hotel and casino developer Jay Sarno. The photographs primarily depict Sarno and his family. The photographs also depict some of Sarno's development projects, including Circus Circus, Caesars Palace, and the Grandissimo. The photographs depict construction of the hotels, events, and famous figures.

The Robert Beckmann Photographs contain photographic slides, prints, and negatives of the paintings, murals, and commercial projects of American artist Robert Beckmann from 1964 to 2009. The collection includes photographs of Beckmann's paintings and murals from around the United States, including works commissioned for casinos in Las Vegas, Nevada, banks, schools, and government buildings. Other photographs document Beckmann's research subjects, models, and art installations.

The Beckley Family Photograph Collection (approximately 1891-1982) consists of black-and-white photographic prints and negatives and color photographic slides. The images depict the Beckley family, their businesses in southern Nevada, and Las Vegas, Nevada as the city developed during the first half of the twentieth century. Also included are images of airplanes at the first Las Vegas airport Anderson Field, later renamed Rockwell Field in 1925, Fremont Street in Las Vegas, and postcards of mining towns across southern Nevada.

The Southern Nevada Gem and Mineral Society Records (1950-2024) contain the records of the Clark County Gem Collectors, Las Vegas Gem Collectors, and the current Southern Nevada Gem and Mineral Society. The collection contains articles of incorporation, by-laws, membership directories, meeting minutes, correspondence, financial records, show paperwork, and award certificates. Also included are photographs of the organizations since the 1970s and digital scans of Gem Times and The Polished Slab newsletters.