Records consist of interoffice correspondence (1902-1908) with home office in St. Louis (correspondents include Paul A. Fusz, George S. Zehnder, and John R. Lucas); general correspondence (1903-1907) primarily with equipment suppliers and with ore processors; 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.