Abstract This collection consists of records (1876-1974) of the Anaconda Copper Mining Company and contains correspondence, court papers, financial and production records, legal documents, organizational records, subject files, and other materials for the Anaconda Copper Mining Company and many of its predecessor and subsidiary companies and departments. Among the major subgroups are General Office; Big Blackfoot Milling Company; Bitter Root Development Company; Boston and Montana Consolidated Copper...

Abstract Oscar Baarson was assistant superintendent of the Anaconda Company's East Helena, Montana, plant; Helena City Engineer; district manager for the U.S. War Production Board during World War II, engineer for the State Examiners Office and Lewis and Clark County surveyor. This collection consists of Oscar Baarson's files (1925-1950) concerning his work with the Anaconda Company, the City of Helena, and the State Examiners Office; and a small group of personal papers relating to Baarson's family,...

Abstract Anton M. Holter (1831-1921) was a pioneer Helena, Montana, lumberman and founder of the A.M. Holter Hardware Company. Papers (1831-1921) include correspondence, and organizational and financial records relating to mining, agriculture, lumber, real estate, and oil interests of three generations of the family, headed successively by Anton M. Holter, Norman B. Holter, and Norman J. "Jeff" Holter. Many of the enterprises were in partnership with Samuel T. Hauser. Interests include the A.M....