You are bidding on a lot of 8 books involved with Illinois State Geological Surveys and Investigative Reports. All have soft covers. All are in good condition with no stains, markings, tears or damage. Included in this lot are:

• Circular No. 59, Structural Trends in the Illinois Basin, 1940, 4 pages
• Circular No. 122, Use of Electrical Geophysical Methods In Ground Water Supply, 1952, 13 pages.
• Circular No. 34, Engineering Aspects of the Geology of the Vienna City Reservoir, 1938, 4 pages
• Circular No. 100, Early Ordovician Strata Along Box River in Northern Illinois, 1943, 10 pages
• Circular No. 60, Some Geological Studies Presented at the State Academy of Science in 1939, 1940, 19 pages
• Report of Investigations 179, Geochemical Prospecting in the Zinc Lead District of Northwestern Illinois, 1955, 11 pages
• Report of Investigation No. 67, Porosity, Total Liquid Saturation, and Permeability of Illinois Oil Sands, 1940, 72 pages
• Report of Investigations No. 89, Water Flooding of Oil Sands in Illinois, 1943, 101 pages.