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Creator
- Gehres, W. S. (Wilmer Sherman), 1887-19637
- Geological Survey (U.S.)7
- Goodlove, C. W.7
- Herrington, R. M. (Russell McKee), 1890-19777
- Herron, W. H. (William Harrison), 1865-7
- Kentucky Geological Survey7
- Marshall, R. B. (Robert Bradford), 1867-1949[remove]7
- U.S. Coast and Geodetic Survey7
- Ellis, J. R. (Topographer)5
- Hawkins, Geo. T. (George T.)5
- United States. Army. Corps of Engineers5
- United States. Army2