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Start Over Place Illinois--Macoupin County Year 1915 Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. Illinois (Macoupin County) Gillespie quadrangle : topography

Maps University Of Illinois Urbana Champaign Public content
1915. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1912.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey Division (Urbana, Ill.), 1915. and U.S. Geological Survey (Washington, D.C.).