The Ronnow Family Photographs contain four black-and-white photographic prints of the Ronnow family in Southern Nevada from approximately 1870 to 1950. Also included is one large oversized black-and-white photographic print of the Old Rotary Club with C. C. Ronnow present.

The Nevada Consolidated Copper Company Records (approximately 1907-1978) contain the business records of the company, including correspondence, freight bills, ledgers, maps, leaching data, and books relating to mining. The majority of the records post-date the company's name change to Kennecott Mining Company.

The Nevada-Utah Mines and Smelters Corporation Records (1889-1949) are comprised of the financial records of the company's activity regarding the Manhattan mine in Pioche, Lincoln County, Nevada. The collection contains bank records, accounts, and some correspondence, and is generally related to the company's financial activities. It also includes the company's financial vouchers, bills, receipts, and checks.

The J. Ross Clark Scrapbook dates from approximately 1897 to 1972 and consists of newspaper clippings collected by his wife, Miriam Evans Clark. The clippings relate to professional events in the lives of J. Ross Clark and his brother, Senator William A. Clark. A small number of the clippings refer to births, marriages, and deaths in Miriam Evans and J. Ross Clark's families. Also included are documents written by J. Ross Clark's grand-niece, Dorothy Murdock Dunkley, that offer additional information about the Clark and associated families.

The Artemus W. Ham Family Papers (1857-1970) contain postcards written by family members, newspaper clippings about the Ham family, and a Nevada Senate Concurrent Resolution memorializing Artemus W. Ham, Sr. Also included are genealogy notes, a commencement program from Michigan Law School, and membership cards of Artemus W. Ham, Sr.