University of Illinois Urbana-Champaign

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Showing 1351–1380 of 2,158 items
Thumbnail for Cache River Area Assessment
Cache River Area Assessment
Illinois Department of Natural Resources. Office of Scientific Research and Analysis

Thumbnail for Technograph. 34 (1921 - 1922)
Technograph. 34 (1921 - 1922)
Submitter: Timothy Donohue

Thumbnail for Oil investigations in 1917 and 1918
Oil investigations in 1917 and 1918
Illinois State Geological Survey; Barrett, Nellie Okla; Nebel, Merle Louis; Coryell, Horace Noble; Tough, Fred H.; Williston, Samuel H.; Savage, Thomas Edmund