Soft Cover. Condition: NEAR FINE. "1) oversize soft-cover, "The New Albany Shale Group of Illinois" by Robert M. Cluff, Mark L. Reinbold and Jerry A. Lineback, Illinois Institute of Natural Resources State Geological Survey Division, Circular 518, 1981, 83 pp., illustrated with tables maps and graphs. NEAR FINE (has one library stamp and very, very light wear along the spine). 2) Map packet, Illinois State Geological Survey, Circular 518, The map packet includes 4 fold-out maps: A) North-south geophysical log cross sections of the New Albany Shale Group. B) East-west geophysical log cross sections of the New Albany Shale Group. C) Total thickness of the New Albany Shale Group in Illinois. D) Geologic structure of the base of the New Albany Shale Group in Illinois. Condition of maps is NEAR FINE.".