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. Holter Hardware Company; Holter Realty; Holter Research Foundation; Judith Farms; Montana Flour Mills; and the Helena and Frisco, Helena and Victor, the Maginnis mining companies, and many others.
Helena, Montana, mining and geological engineer Leverett Ropes (1868-1953) was employed by various mining firms, by the federal government, and as a private consultant. This collection contains papers (ca. 1888-1952) concerning Ropes' mining engineering and geology consulting work and his interest in a variety of political issues. The general correspondence (1928-1952) concerns mines in Lewis and Clark, Jefferson, and Broadwater counties, Fort Peck Dam, his dispute with federal agencies over financing of Montana mining ventures, and issues of personal interest to Ropes such as the repeal of prohibition and New Deal policies. In addition there is biographical material (1935-1946); court papers (1910, 1940); financial records (1936-1951); legal documents (1928-1943) for several mining companies; reports (1929-1952) by Ropes and others on numerous mining properties; speeches and writings (1929-1952) on mining and politics, including the lawlessness (racketeering) caused by prohibition; miscellany (1891-1947); and clippings.