« Previous
Next »
Creator
- Illinois State Geological Survey4
- Indiana. Geological Survey4
- Gray, Henry Hamilton, 1922-3
- Keller, Stanley J.2
- Wayne, William J. (William John), 1922-2
- Wier, Charles E. (Charles Eugene), 1921-2
- Atherton, Elwood, 1909-1
- Bleuer, N. K. (Ned Kermit), 1943-1
- Cox, E. T. (Edward Travers), 1821-19071
- Hill, John R,1
- Johnson, Gerald H.1
- Lesquereux, Leo, 1806-18891
- Lineback, Jerry A. (Jerry Alvin)1
- Schneider, Allan F. (Allan Frank), 1926-1