Labels:map | text OCR: L. MICHIGAN Rockford Elgin IOWA Aurora Chicago N. Rock Island Peoria Champaign Decatur Springfield Z Z MIS INDIANA OURI E St. Louis KENTUCKY ILLINOIS 0 10 POM Cities 0to 50,000 1,000,000 and over and O 50,000 to 500,000 Towns 500,000 to 1,000.000 O