Creator
- Forest Products Laboratory (U.S.)31
- Selbo, M. L. (Magnus Leonard), 1901 7
- Freas, Alan d'yarmett, 1910 3
- Stamm, Alfred J. (Alfred Joaquim), 1897 3
- Erickson, E. C. O.2
- Ethington, Robert L.2
- Seborg, R. M.2
- Werren, Fred2
- Wilson, T. R. C. (Thomas Randall Carson), 1884 2
- Beairsto, Cody J.1
- Bell, Earl Ross1
- Blank, Curtis1
- Bora, Shrenik S.1
- Cottingham, Willard Sherwin1
- Currier, Raymond A.1
- Dancer, Eric R.1
- Drow, John T.1
- Dunlap, M. E.1
- Faulkes, W. F., jr.1
- Ferrari, Charles J.1