1922. Grindhem, Martin Johansen, McGill-Warner Co., and Railroad and Warehouse Commission of the State of Minnesota. Cartographic Details: Scale approximately 1:633,600. 1 in . = 10 mi (W 97°--W 91°/N 50°--N 44°). Includes index on verso. Includes color key sh... McGill-Warner Co. (St. Paul, Minnesota).