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Start Over Place Illinois Publisher U.S. Geological Survey (Washington, D.C.) Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. Illinois, Delavan quadrangle : 15-minute series

Maps University Of Illinois Urbana Champaign Public content
1942. Geological Survey (U.S.). Contour interval 10 feet;"Surveyed in 1930 and 1935-1936.";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey Division (Urbana, Ill.), 1942. and U.S. Geological Survey (Washington, D.C.).

2. Illinois (Iroquois county), Gilman quadrangle : 15-minute series

Maps University Of Illinois Urbana Champaign Public content
1946. Geological Survey (U.S.). Contour interval 10 feet.;"Mapped by the Geological Survey 1943-1944.";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey Division (Urbana, Ill.), 1946. and U.S. Geological Survey (Washington, D.C.).

3. 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.).