National Geologic Map Database
Product Description Page
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Title: Illinois
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Author(s): Leverett, Frank
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Publishing Organization: U.S. Geological Survey
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Series and Number: Water-Supply Paper 114 [p. 248-264]
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Larger Work: Underground waters of the eastern United States
- Publication Date: 1905
- Map Scale: 1:3,835,000
- Cross Section: None
- North Latitude: 42° 30' 31" N (42.5086)
- South Latitude: 36° 58' 22" N (36.9728)
- East Longitude: 87° 29' 39" W (-87.4942)
- West Longitude: 91° 30' 41" W (-91.5114)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.