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Creator
- Burney, H. E.1
- Clarkson, C. D. S.1
- Cooke, Chas. E. (Charles E.)1
- Ellis, J. R. (Topographer)6
- Gehres, W. S. (Wilmer Sherman), 1887-19637
- Geological Survey (U.S.)16
- Goodlove, C. W.7
- Graff, Fred, Jr.3
- Griffin, W. H. (William H.)6
- Hawkins, Geo. T. (George T.)5
- Herrington, R. M. (Russell McKee), 1890-19777
- Herron, W. H. (William Harrison), 1865-24
- Illinois State Geological Survey6
- Kentucky Geological Survey8
- Lee, L. L. (Luria Lyons), 1882-19621
- Louisville (Ky.)1
- Marshall, R. B. (Robert Bradford), 1867-1949[remove]24
- Michigan. Geological Survey1
- Sadler, C. L.8
- Smith, L. Scott1