This collection includes correspondence and mining, ranching, and real estate business records, as well as some of E.W. Beattie's U.S. Surveyor General papers (1897-1905). There are subgroups for E.W. and G.D. Beattie, the Beattie Company, Choteau Land, Comstock Mining and Milling Company, Ida Mining Company, Boulder-Comstock Mining Company, Kit Carson Mining Company, Peerless Jennie Mining Company, Riverside Addition to North Great Falls, Rosebud Land and Improvement Company, and the Silver Bow Park Addition in Butte.