- Oregon State University82
- Lane County Historical Society (Or.)27
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)26
- Oregon State University. Agricultural Experiment Station25
- Oregon State University. College Of Forestry23
- Oregon State University. Forest Research Laboratory22
- Morrell, Jeffrey J.18
- Et Al.16
- Oregon State University. Extension Service15
- Oregon. Department Of Fish And Wildlife15
- Dietterich, Thomas G.12
- Flann, Nicholas S.11
- Geyer, Nancy A.11
- Halpern, Benjamin S.9
- Hilker, Thomas9
- Osu Forestry Alumni Association9
- Webster, Janet G.9
- Gilmont, Susan8
- Laurel, Benjamin J.8
- Moravets, F. L.8