The Goodhope Mining Company was a silver mining company located in Philipsburg, Montana. Records consist of interoffice correspondence (1902-1908) with home office in St. Louis; general correspondence (1903-1907); minor financial records and legal documents (1902-1903); annual reports (1903-1904) to the Secretary of State; assay and bullion reports (1902-1907); weekly reports (1902-1905, 1907) of agent John R. Lucas; and miscellany.

Records of the Philipsburg Mining Company, of Philipsburg, Montana, consist of interoffice correspondence between the Philipsburg office, the St. Louis office, and the sales office in Cincinnati; general correspondence; financial records, consisting primarily of vouchers; production records, including assay reports and manganese ore shipment records; accident reports; and miscellany.