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Start Over Year 1919 File Format JPEG2000 Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. Illinois, Vienna quadrangle : topography

Maps University Of Illinois Urbana Champaign Public content
1919. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1916.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).