The Helen J. Stewart Papers (1869-1978) document the life of Las Vegas, Nevada pioneer, Helen J. Stewart. It includes correspondence between Stewart and her children as well as various family legal papers and certificates. The collection also contains Helen J. Stewart's 70th birthday scrapbook, a ledger, and a day book from 1904-1919, as well as several photograph albums and information related to the family burial plot.

The Harrah’s Entertainment Corporate Archives (dating from 1811 to 2004 with the bulk of the materials dating from 1940 to 2000) contain the promotional and corporate files of Harrah’s Entertainment Inc. and its predecessors, as well as Bill Harrah’s personal papers and card game collection. The materials were compiled and developed as a corporate archive by Harrah's Entertainment, Inc.’s Corporate Communications Department. The collection is primarily comprised of casino and employee periodicals, reports, manuals, promotional files, ephemera, and newspaper articles that document Bill Harrah’s casinos in Reno, Nevada and Lake Tahoe as well as Harrah’s Inc., Holiday Inns, Inc., Holiday Corporation, the Promus Companies, and Harrah’s Entertainment, Inc. Also included are photographs that document the construction of Harrah’s properties, business operations, the people who worked and performed at Harrah’s properties, and Bill Harrah’s automobile collection. The collection also contains Bill Harrah’s collection of playing cards and card games. Also included are photographs of the Harrah family.

The Stuart and Flora Mason Photographs (1940-1999) contain photographs of hotels, casinos, and other buildings constructed by Taylor International Corporation, which was owned by the Mason Family. The photographs depict the Aladdin, Venetian, Tropicana, Riviera, MGM Grand, and International hotels and casinos in Las Vegas, Nevada. The photographs also depict buildings in Miami and Coral Gables, Florida, and San Juan, Puerto Rico.

The General Land Office Survey Books (approximately 1881-1919) consist of nine bound volumes of survey maps originally conducted in 1881 by the General Land Office (which later became the U.S. Bureau of Land Management). The primary information shown on the maps is section, township, and range numbers, as well as designation and dimenstions of government lots. The books in this collection cover townships 13 through 32, which includes the majority of Clark County. The secondary information shown on the maps is topographical and geographical in nature, showing mountains, washes, rivers, major wagon roads, and types of vegetation. The hachure lines along section lines indicate mountains and in all probability those lines were not actually walked. Patent application lists are attached to some maps, which also have property owner's name and address. If the patent was granted, the patent number is also shown. If the patent application nwas withdrawn or forfeited, that notation was also noted.