| | Description: Map of Illinois. Place Names: Aurora, Bloomington, Chicago, Freeport, Galesburg, Jacksonville, Peoria, Quincy, Rockford, Springfield
 ISO Topic Categories: oceans, location, inlandWaters, boundaries
 Keywords: Illinois, borders, political, physical, country borders, county borders, oceans, location, inlandWaters, boundaries, Unknown, 1920
 Source: The New Reference Atlas of the World - A New Series of Physical, Political and Historical Maps compiled from Government Surveys and exhibiting the Latest Results of Geographical Research (New York, NY: C. S. Hammond & Company, 1920) 9293
 Map Credit: Courtesy The Private Collection of Roy Winkelman
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