The occurrence of coal balls in No. 6 coal bed at Nashville, Washington County, Illinois
Herrin (No. 6) Coal--Illinois--Washington County
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 email@example.com Monday thru Friday, 8am-noon or 1pm-5pm.