- Oregon State University73
- Oregon State University. Extension Service46
- Beers, Elizabeth H.33
- Oregon State University. College Of Forestry33
- Lane County Historical Society (Or.)31
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club22
- Oregon State University. Agricultural Experiment Station21
- Lane County Pioneer Historical Society (Or.)19
- Daly, Elizabeth A.18
- Hatfield Marine Science Center17
- Et Al.16
- Oregon State University Libraries And Press16
- Bisson, William H.14
- Brodeur, Richard D.14
- Peterson, William T.13
- Borer, Elizabeth T.12
- Al Temaimi, Rabeah11
- Amedei, Amedeo11
- Forte, Stefano11
- Geyer, Nancy A.11