- Arndt, Harold H.2
- Geological Survey (U.S.)2
- Rothrock, Howard Eugene, 1893-2
- Trexler, J. Peter, 1926-2
- Darton, Nelson Horatio, 1865-19481
- Drake, Avery Ala, 1927-1
- Geological Survey of Pennsylvania1
- Gravenor, C. P.1
- Shattuck, George Burbank, 1869-19341
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