1914. Clausen, A. C., Cram, George Franklin, 1841-1928, Elmquist, Charles Emil (1873-1948), George F. Cram Company, Jacobson, Ole P.B., Mills, Ira B., Railroad and Warehouse Commission of the State of Minnesota, and Yapp, Thomas. Cartographic Details: Scale approximately 1:633,600. Also shows congressional districts. "Ira B. Mills, Chas. E. Elmquist, O.P.B. Jacobson, Railroa... George F. Cram (Chicago, Ill.), 1909.