The core of the collection consists of interoffice correspondence (1912-1956) among officers, managers, and stockholders, including Bennett Price, David P. Owen, Hugh P. Evans, Frank L. Reece, A.P. Haywood. In addition there is general correspondence (1903-1959) between the company and mining engineer Leverett S. Ropes, attorney Edmond G. Toomey, and others; financial records (1914-1956), including financial statements by Frank L. Reece, assay reports, tax statements, and miscellany; legal documents (1889-1953), including an abstract of title, deeds, leases, mineral location, etc.; sketch maps of the claims; organizational records (1904-1955), including articles of incorporation, minutes, stockholder records, etc.; reports, including the original report on the Earthquake and General Grant claims (1888) by G.C. Swallow; and miscellany. There are minor subgroups for Bennett G. Owen, Jr.; Gwen P. Owen; and the Owen-Wilson Company.