The Junior League of Las Vegas' Records on the Morelli House Preservation Project contains the records of the Junior League of Las Vegas and the organization's efforts to preserve the Morelli House in downtown Las Vegas, Nevada from 1997 to 2017. Records are comprised of various internal and external planning documents, research files, advertising and publicity, correspondence, grant files, and photographs. Also included in this collection are scans of original planning documents and drawings used by Las Vegas, Nevada architect, Hugh E. Taylor, during construction of the Morelli House in the 1950s.

The Southern Nevada Historical Society Photograph Collection on Basic Magnesium, Inc. contains photographs of the construction of Basic Magnesium Inc.'s plants and buildings from 1941 to 1942. The photographs primarily depict aerial views of the plant site and various buildings, including the administration building, tent camp, chlorination buildings, electrolysis facilities, electrical distribution systems, and warehouses. The photographs also depict Lake Mead and the early buildings in Henderson, Nevada.

The Eugene Martin Christiansen Papers (dating from 1948 to 2017, with the bulk of the materials dating from 1975 to 2005) contain research files, reports, and presentations about gambling written and collected by gaming consultant Eugene Martin Christiansen. Most of the collection is comprised of research files and reports about legalized gambling, casinos, hotels, racetracks, and entertainment venues, including the economic impacts of legalized gaming, feasibility studies for opening new casinos and racetracks, popularity of off-track betting, horse and dog racing, table games, gambling addiction, gaming regulation, taxes, lotteries, and Native American gaming. The collection also includes research files covering state and municipal regulation of gaming, significant individuals in the gaming industry, prominent hotels and casinos, gaming research conferences, financial reports, and international regulation of gaming. The collection also contains a small amount of business records from Christiansen’s entertainment company Feature Film Finance & Production.