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Now showing items 1-8 of 8
New Athens-Okawville folio, Illinois
(Geological Survey (United States), 1921)
Danville folio, Illinois-Indiana
(Geological Survey (United States), 1900)
Carlyle-Centralia folio, Illinois
(Geological Survey (United States), 1923)
Gillespie-Mount Olive folio, Illinois
(Geological Survey (United States), 1926)
Galena-Elizabeth folio, Illinois-Iowa
(Geological Survey (United States), 1916)
Murphysboro-Herrin folio, Illinois
(Geological Survey (United States), 1912)
Patoka folio, Indiana-Illinois
(Geological Survey (United States), 1904)
Tallula-Springfield folio, Illinois
(Geological Survey (United States), 1913)