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Creator
- Geological Survey (U.S.)8
- Kentucky Geological Survey[remove]8
- Gehres, W. S. (Wilmer Sherman), 1887-19637
- Goodlove, C. W.7
- Herrington, R. M. (Russell McKee), 1890-19777
- Herron, W. H. (William Harrison), 1865-7
- Marshall, R. B. (Robert Bradford), 1867-19497
- U.S. Coast and Geodetic Survey7
- Ellis, J. R. (Topographer)6
- Hawkins, Geo. T. (George T.)5
- United States. Army. Corps of Engineers5
- United States. Army2
- Cooke, Chas. E. (Charles E.)1
- Illinois State Geological Survey1
- Lloyd, W. J. (Topographer)1
- Smith, L. Scott1
- Wilson, Herbert M. (Herbert Michael), 1860-19201