- Oregon State University. Agricultural Experiment Station56
- Baggett, James R.45
- Mack, H. J.43
- Robinson, R. H. (Reginald Heber), 1886 30
- Forest Products Laboratory (U.S.)28
- Frazier, W. A.28
- Oregon State College. Agricultural Experiment Station26
- Oregon State College. Federal Cooperative Extension Service22
- Oregon State University. Extension Service20
- Oregon Agricultural College. Experiment Station18
- Crowell, H. H.17
- Bellantoni, L.15
- Mcgivern, C. L.15
- Schellman, H.15
- Huddleston, J. H. (James Herbert), 1942 13
- Varseveld, George13
- Brook, Edward J.12
- Mansour, N. S.12
- Adams, Paul W.11
- Brewer, Linda J.11