Creator
- Paul, Benson H.29
- Schafer, Earl R.29
- Mason, Ralph S.28
- Bayer, Range D., 1947 27
- Oregon State Board Of Forestry27
- Gerry, Eloise, B. 188526
- Heebink, Bruce G.26
- Oregon State University. Malheur Experiment Station26
- United States. Forest Health Protection26
- Boersma, L.25
- Boller, Kenneth H.25
- Drow, John T.25
- Lavender, Denis P.25
- Martin, J. Stanley25
- United States. Agency For International Development25
- Dewey, Jerald E.24
- Hamel, Dennis R.24
- Harris, Elwin E.24
- Luxford, R. F. (Ronald Floyd), 1889 24
- Milota, Michael R.24