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Creator
- Geological Survey (U.S.)10
- Renshawe, John H.10
- Goodlove, C. W.9
- Hawkins, Geo. T. (George T.)6
- Blair, H. B. (Herbert Buxton), 1860-19055
- McKinney, R. C. (Robert C.)5
- Gehres, W. S. (Wilmer Sherman), 1887-19632
- Herrington, R. M. (Russell McKee), 1890-19772
- Herron, W. H. (William Harrison), 1865-2
- Kentucky Geological Survey2
- Lovell, W. H. (William H.)2
- Marshall, R. B. (Robert Bradford), 1867-19492
- U.S. Coast and Geodetic Survey2
- United States. Army2
- Wilson, Herbert M. (Herbert Michael), 1860-19202