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Creator
- Illinois State Geological Survey[remove]20
- Geological Survey (U.S.)18
- 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
- Lloyd, W. J. (Topographer)3
- Cooke, Chas. E. (Charles E.)2
- Ellis, J. R. (Topographer)2
- Graff, Fred, Jr.2
- Illinois. Department of Registration and Education2
- Indiana. Department of Conservation2
- Smith, L. Scott2
- U.S. Lake Survey2
- United States. Army2
- Wilson, Herbert M. (Herbert Michael), 1860-19202
- Hawkins, Geo. T. (George T.)1
- Jennings, J. H. (James H.), 1864-19271