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De Soto QuadrangleNOTE: This is not the actual topographic map! This image depicts the area covered by the topographic map and identifies the surrounding maps. If you have additional questions contact the Information Office or call 217-244-0933. ![]() County: Franklin, Jackson, Williamson Current Date: 1968 Photo Revision Date: 1978 Archive Date: 1968
Ordering information for Illinois State Geological Survey Publications.
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