Creator
- Bollen, Walter Beno, 1896 8
- Oregon State University. Forest Research Laboratory2
- Kachelhoffer, Fred George, 1893 1
- Merryfield, Fred, 1900 1
- Miller, P. W. (Paul William), 1901 1
- Neal, John Lloyd1
- Oregon State College. Agricultural Experiment Station1
- Oregon State College. Engineering Experiment Station1
- Simmons, J. E. (Joseph E.), 1891 1
- Wright, Ernest, 1899 1