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Start Over Subject Geology Spatial Coverage Illinois.

1. Chicago areal geologic maps

Yale Public content
1924. 2018-04-06T18:58:34Z. 2018-04-06T18:58:34Z. Bretz, J. Harlen, 1882-1981, cartographer. State Geological Survey Division. ICN ICN. English. cartographic image. Public. Illinois, Chicago Region, Chicago Region (Ill.), Illinois., and Chicago Region.

2. Geologic map index of Illinois

Yale Public content
1987. 2002-06-01T04:00:00Z. 2018-05-11T18:34:02Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Illinois and Illinois.

3. Geologic map of Illinois

Yale Public content
1967. 2018-04-18T19:53:47Z. 2018-09-05T19:39:34Z. Willman, H. B. (Harold Bowen), 1901-. Illinois State Geological Survey. English. cartographic image. Public. Illinois and Illinois.

4. Geologic map of Illinois

Yale Public content
1945. 2018-05-15T17:51:40Z. 2018-05-15T18:15:19Z. Weller, J. Marvin (James Marvin), 1899-1976. State of Illinois, Department of Registration and Education, Division of the State Geological Survey. English. cartographic image. Public. Illinois and Illinois.

5. Geologic map of Illinois

Yale Public content
1917. 2018-05-15T17:54:45Z. 2018-05-15T17:54:45Z. Illinois State Geological Survey. State of Illinois, Dept. of Registration and Education, State Geological Survey Division. English. cartographic image. Public. Illinois and Illinois.

6. Gillespie-Mount Olive folio, Illinois

Yale Public content
1926. 2013-03-14T18:44:45Z. 2015-04-10T21:00:25Z. Lee, Wallace, 1883-1972. U.S. Geological Survey. English. Public. Illinois, Illinois., and États-Unis.

7. Quaternary deposits of Illinois

Yale Public content
1979. 2018-04-18T19:57:42Z. 2018-09-05T19:20:24Z. Lineback, Jerry Alvin, compiler. Institute of Natural Resources, State of Illinois, Illinois State Geological Survey. English. cartographic image. Public. Illinois and Illinois. Quaternary and From 2 million years ago.