Ledgers, 1908-1913, of the Arizona and Michigan Mining Company, based in Calumet, Michigan with mining in Globe, Arizona. Includes invoice ledger, cash ledger, journals, stock registers, stock transfer registers, and payroll ledger.

Research collection, before 2004, contains research notes, photographs and other material relating to research conducted by Erik C. Nordberg and Frank Lewis Orrell into the history of the Arizona and Michigan Mining Company, as well as other links between mining in these two states.

Papers, circa 1910-circa 1949, of Nathan O. Lawton, a graduate of the Michigan Mining School (now Michigan Technological University) in Houghton, Michigan, and a practicing mining engineer.

Records, 1909-1920, of the Superior and Globe Copper Co., a mining company located near Globe, Arizona. Volume of financial records includes record of bills audited, detailing office expenses and incidental expenses.