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- Schultz, C. Bertrand (Charles Bertrand), 1908-19953
- Scott, William Berryman, 1858-19473
- Barbour, Erwin Hinckley, 1856-19472
- Leidy, Joseph, 1823-18912
- Matthew, William Diller, 1871-19302
- Wood, Albert Elmer, 1910-20022
- Academy of Natural Sciences of Philadelphia1
- Barbour, Erwin Hinckley1
- Effinger, William L. (William Lloyd)1
- Falkenbach, Charles H.1
- Jepsen, Glenn L. (Glenn Lowell), 1904-19741
- Jepsen, Glenn Lowell, 1904-1
- Martin, Larry D.1
- McGrew, Paul Orman, 1909-1
- Smithsonian Institution1
- Stout, Thompson M.1
- Tanner, Lloyd G.1
- United States. Forest Service, issuing body1
- United States. National Park Service1
- Vondra, Carl F.1