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Creator
- Atherton, Elwood, 1909-1
- Ault, Curtis H.1
- Bleuer, N. K. (Ned Kermit), 1943-1
- Borden, W. W. (William Wesley), 1823-19064
- Burger, Ann M.1
- Cazee, J. T. (James T.)1
- Collett, John, 1828-189914
- Cox, E. T. (Edward Travers), 1821-190712
- Eggert, Donald L.1
- Forsyth, Jane L. (Jane Louise), 1921-2
- Frushour, Samuel S.1
- Gooding, Ansel Miller1
- Gray, Henry Hamilton, 1922-5
- Guennel, G. K.1
- Hartmann, Hugh1
- Hill, John R,1
- Hutchison, Harold C. (Harold Christy), 1925-5
- Illinois State Geological Survey4
- Indiana. Geological Survey11
- Johnson, Gerald H.2