mapped, edited, and published by the Geological Survey in cooperation with Illinois Dept. of Registration and Education, Geological Survey Division and Indiana Dept. of Natural Resources, reviset in cooperation with Indiana Dept. of Natural Resources.Geological Survey[1981]<YG1-U-Ill-2.4-3467-2-SE>
National Diet Library
- Alternative TitleCalumet City quadrangle, Illinois-Indiana
- Alternative TitleCalumet City quadrangle, Illinois-Indiana