Publication Information: Key Details: Catalog B036 Publication Year 1920 Author Illinois State Geological Survey Publication Type Bulletins Additional Details: Publication Link Bulletin 36 Plate 2 (1 MB pdf) Structure map of the surface of St. Peter sandstone Plate 3 (2 MB pdf) Map of Clark, Crawford, and Lawrence counties showing oil p… Plate 4 (2 MB pdf) Structure section from Mahomet south to southern Lawrence c… Publication Price Buy