The Charles S. Sprague and Benjamin Gill Papers on Nevada Mining (1904-1925) are comprised of various records from the mining companies owned and operated by businessmen Charles S. Sprague and Benjamin Gill who were active in the central Nevada boomtowns of Goldfield and Tonopah in the early twentieth century. Documents include correspondence, receipts and invoices, detailed records and copies of government legislative bills relating to the mining industry, and other business correspondence. Sprague's collection consists of his mining business correspondence dating from 1906 to 1925. Gill's papers are comprised of his business correspondence from 1916 to 1922.

The collection is comprised of architectural records (1947-2001) of American architect, Homer Rissman and the architectural firm, Rissman and Rissman Associates Ltd, a partnership of Homer Rissman and his brother Marshall. The collection includes 825 items from over 40 major projects and over 110 minor projects. The Rissmans' work represented in the collection focused on Las Vegas, Reno, and Lake Tahoe, Nevada, Los Angeles, Southern California, and Arizona, with Homer's early career design work in Chicago, Illinois. The materials feature hand-drawn architectural drawings, ranging from pencil and ink on tracing paper preliminary sketches to ink on Mylar (TM) construction documents, and a number of artist’s renderings, used for presentations and promotional materials. The drawings also contain work from a number of consultants, engineers, and other architects who collaborated on the development of the various projects. The collection includes architectural drawings for: hotels, casinos, integrated casino resorts, office towers, multi-family residential developments, and custom single-family homes.