- United States. Forest Service. Pacific Northwest Region. Thirty Year Club9
- Oregon State Agricultural College. Agricultural Experiment Station5
- Oregon State College. Extension Service4
- Hermann, Richard K.3
- Lane County Historical Society (Or.)3
- Nash, Wallis3
- Oregon Agricultural College. Alumni Association3
- Oregon State University3
- Sulerud, George L. (George Leslie), 1900 3
- Benton County (Or.)2
- Burch, William R., 1933 2
- Carlson, Anders E.2
- Clark, Peter U.2
- du Plessis, Lihani2
- Fort Vancouver Historical Society2
- Lavender, Denis P.2
- Muir, John, 1838 19142
- Nelson, Milton Nels, 1891 2
- Northwest Area Foundation (U.S.)2
- Oregon Agricultural College2