These records consist primarily of interoffice correspondence (1889-1902) between the Company's home office in St. Louis, Missouri, and the mine office at Philipsburg, Montana. This correspondence discusses in considerable detail the day-today operation of the mine. There is also incoming correspondence (1890-1898) from several companies from which they bought supplies and letterpress books (1881-1900) of outgoing correspondence. In addition there are annual reports (1880-1900, 1903), bullion records (1892-1901) an account book (1898-1901), and claim records and deeds (1878-1897).