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Start Over Year 1942 Publisher Geological Survey Division (Urbana, Ill.) Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. Illinois, Oakland quadrangle.

Maps University Of Illinois Urbana Champaign Public content
1942. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army.";"Surveyed in 1922, 1935 an... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

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