- Sims, Paul K.14
- Southwick, David L.14
- Tipping, Robert G.14
- Berg, James A.13
- Harris, Kenneth L.13
- Winchell, N. H. (Newton Horace), 1839-191412
- Alexander, E. C., Jr.11
- Davidson, D.M., Jr.11
- Severson, Mark J.11
- Cleland, Jane M.10
- Gamble, W. H. (William H.) (Draftsman and engraver)10
- Cappelen, Frederick Wilhelm (1857-1921)9
- McGill-Warner Co.9
- Shedd & Wright Mfg. Co.9
- United States. Forest Service8
- Viswanathan, S., Dr.8
- Austin, George S.7
- Campion, Moira7
- Geological Survey (U.S.)7
- Jennings, Carrie E.7