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Creator
- Geological Survey (U.S.)3
- Herron, W. H. (William Harrison), 1865-[remove]3
- Marshall, R. B. (Robert Bradford), 1867-19493
- U.S. Coast and Geodetic Survey3
- United States. Army. Corps of Engineers3
- Ellis, J. R. (Topographer)2
- Gehres, W. S. (Wilmer Sherman), 1887-19632
- Goodlove, C. W.2
- Hawkins, Geo. T. (George T.)2
- Herrington, R. M. (Russell McKee), 1890-19772
- Kentucky Geological Survey2
- Illinois State Geological Survey1
- Tweedy, Frank, 1854-19371