01040cam a22002531 4500 gs 26000137 DLC 20260227111330.0 781023s1926 ilua b s000 0 eng c gs 26000137 (OCoLC)4311850 U.S. Geol. survey. Library KWiU DLC premarc TN24.I3 L3 Lamar, J. E. (John Everts), 1897-1979. Preliminary report of the economic mineral resources of Calhoun County / by J. E. Lamar. Printed by authority of the state of Illinois. Urbana, Ill., 1926 21 p. illus., tables, diagrs. 25 cm. Illinois State Geological Survey Report of investigations, no. 8 At head of title: State of Illinois. Department of Registration and Education. Division of State Geological Survey. Bibliographical foot-notes. Mines and mineral resources Illinois Calhoun County. Geology, Economic Illinois Calhoun County. 26450 26450