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Author/Creator
- Hayes, Timothy Scott7
- Geological Survey (U.S.)6
- Arkansas Geological Commission3
- Missouri. Division of Geology and Land Survey3
- Bliss, James D.2
- Orris, G. J.2
- Palmer, James R.2
- Bush, Alfred Lerner, 1919-1
- Kansas Geological Survey1
- Krizanich, Gary W.1
- Lawrence County (S.D.)1
- Midcontinent Industrial Minerals Workshop (1991 : Saint Louis, Mo.)1
- South Dakota. Department of Environment and Natural Resources1
- United States. Bureau of Mines1
- Williamson, Joyce E.1