Railroad official. Correspondence (1925–1947); reports (1906–1955); minutes (1945); financial records (1918–1946); maps (1904–1955); and publications (1909–1955) regarding the operations, financial status, and policies of railway companies in central and southeastern Oklahoma. The companies included are the Oklahoma Railway, the Oklahoma City Railway, the Metropolitan Railway, and the El Reno Interurban and the Norman Interurban railroads. The collection also contains correspondence (1947) regarding the liquidation of the Oklahoma City streetcar system, and the development of the Diamond Dishwasher Company (1925).