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Author
- Stager, Harold Keith, 1921-4
- Hatch, Norman L.3
- Puffett, Willard P. (Willard Penry), 1922-3
- Geological Survey (U.S.)2
- Campbell, Marius R. (Marius Robinson), 1858-19401
- Crowder, D. F. (Dwight Farnsworth), 1929-1
- Miller, R. C., cartographer1
- Reeves, Robert G. (Robert Grier), 1920-1
- Snyder, George L. (George Leonard), 1927-1
- Trimble, Donald E.1
