- Oregon State College. Engineering Experiment Station17
- Western Dry Kiln Clubs. Meeting (8th : 1956 : Berkeley, Calif.)17
- Browne, F. L. (Frederick Lincoln), 1895 16
- Davis, George B. (George Balfour), 1915 16
- Bogart, Ralph, 1908 15
- Lavender, Denis P.15
- Carter, Myrtle Miller14
- Huber, M. G.14
- Rietz, Raymond Carl, 1901 14
- Burt, Wayne V.13
- Clark, R. Ralph13
- Heebink, Bruce G.13
- Kryn, Jeannette Miriam, 1913 13
- Western Dry Kiln Clubs. Meeting (4th : 1952 : Redding, Calif.)13
- Western Dry Kiln Clubs. Meeting (5th : 1953 : Boise, Idaho)13
- Western Dry Kiln Clubs. Meeting (7th : 1955 : Klamath Falls, Or.)13
- Paul, Benson H.12
- Every, R. W.11
- Mumford, D. Curtis (Dwight Curtis), 1900 11
- Peck, Edward C. (Edward Coit), 1894 11