Previous Chapter: Idaho
Suggested Citation: "Illinois." National Research Council. 1932. Summary Information on the State Geological Surveys & the United States Geological Survey: Bulletin of the National Research Council. Washington, DC: The National Academies Press. doi: 10.17226/9570.
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Suggested Citation: "Illinois." National Research Council. 1932. Summary Information on the State Geological Surveys & the United States Geological Survey: Bulletin of the National Research Council. Washington, DC: The National Academies Press. doi: 10.17226/9570.
Page 29
Suggested Citation: "Illinois." National Research Council. 1932. Summary Information on the State Geological Surveys & the United States Geological Survey: Bulletin of the National Research Council. Washington, DC: The National Academies Press. doi: 10.17226/9570.
Page 30
Suggested Citation: "Illinois." National Research Council. 1932. Summary Information on the State Geological Surveys & the United States Geological Survey: Bulletin of the National Research Council. Washington, DC: The National Academies Press. doi: 10.17226/9570.
Page 31
Suggested Citation: "Illinois." National Research Council. 1932. Summary Information on the State Geological Surveys & the United States Geological Survey: Bulletin of the National Research Council. Washington, DC: The National Academies Press. doi: 10.17226/9570.
Page 32
Next Chapter: Indiana
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