Mineral resources of Knox County
Report prepared for Knox County Planning Commission. Brief outline of resources, with maps showing generalized areas of sand and gravel deposits (1948 data) and approximate areas in which coal occurs (1936 data).;
Cited in Circular 201, "Unpublished Reports on Open File";
Manuscripts, maps, fieldnotes, and photographs may be viewed in-house only. Please contact the ISGS Special Collections Curator, Anne Huber, for an appointment at 217-300-0005 or email firstname.lastname@example.org Monday thru Friday, 8am-noon or 1pm-5pm.