- Van Horn, Richard, 1920-5
- Covington, H. R.4
- Geological Survey (U.S.)4
- Williams, Paul L. (Paul Lincoln), 1932-3
- Hackman, Robert J.2
- Price, Don, 1929-2
- Compton, Robert R.1
- Haynes, Donald D.1
- Stuart-Alexander, Désirée E. ( Désirée Elizabeth), 1930-1
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