- Oregon State University39
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club8
- Mote, Don C. (Don Carlos), 1887 6
- Osu Forestry Alumni Association6
- Oregon State Agricultural College. Agricultural Experiment Station5
- Oregon State University. College Of Forestry5
- Aragao, Luiz E. O. C.4
- Et Al.4
- Anderson, Liana O.3
- Baker, Timothy R.3
- Becker, Gabriel Sebastian3
- Beeckman, Hans3
- Boanerges Souza, Danilo3
- Bonal, Damien3
- Botosso, Paulo Cesar3
- Bowman, David M. J. S.3
- Brauning, Achim3
- Brede, Benjamin3
- Brown, Foster Irving3
- Camarero, Jesus Julio3