Rand McNally and Company"The index letters and figures on margin of this map correspond with ... Rand McNally & Co.'s Complete City Railway and Street Number Guide to Chicago." Indexed to railroads. Summary: Shows the new street numbering system as of 1909, the "L", railroads, elevated roads, and street car lines.166 x 67 centimetersJPEGUMN_ALMA:9943959880001701engRand, McNally & Co. (Chicago, Ill.), 1910PublicRand McNally & Co.'s new street number guide map of Chicago.MapsIllinois--ChicagoIllinois1910University of Minnesota