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Creator
- Geological Survey (U.S.)21
- Illinois State Geological Survey11
- Goodlove, C. W.10
- Hawkins, Geo. T. (George T.)10
- Renshawe, John H.10
- Herron, W. H. (William Harrison), 1865-6
- Marshall, R. B. (Robert Bradford), 1867-19496
- U.S. Coast and Geodetic Survey6
- United States. Army Map Service5
- Tweedy, Frank, 1854-19374
- United States. Army. Corps of Engineers4
- Graff, Fred, Jr.2
- United States. Army2