The Las Vegas High School architectural drawings include blueprints for various improvements, expansions, additions, and renovations performed for the Las Vegas, Nevada high school between 1929 and 1972. The architectural drawing sets include site plans, floor plans, elevations, sections, building component details, and structural drawings.

The Spencer and Georgia Butterfield Papers (1890s-1978) consist primarily of photographs and scrapbooks pertaining to Spencer and Georgia Butterfield, a prominent Las Vegas, Nevada couple involved in local business and civic activities. The collection also includes newspaper clippings of their social activities, correspondence, and assorted personal memorabilia.

The Spencer and Georgia Hanna Butterfield Photograph Collection (approximately 1900-1978) consists of black-and-white photographic prints and negatives of the Hanna and Butterfield families. It also contains images of early and prominent residents of Las Vegas, Nevada such as James Cashman Sr., Las Vegas Chamber of Congress members, Union Pacific Railroad president George Ashby, and many other notable persons from early Las Vegas. The collection also includes photographs taken in Elko County, Nevada, the Hoover Dam, and other Las Vegas area images.

The collection consists of letters, greeting cards, survey maps, newspaper clippings, legal papers, photographs, collected recipes, land sales and expense journals, and survey reference books. The material was created or collected by pioneering Nevada surveyor, engineer, and real estate entrepreneur J. T. (John Thomas) McWilliams and his wife, Iona, between 1900 and 1968.