Creator
- Oregon State College. Engineering Experiment Station5
- Graf, Samuel Herman, 1887 3
- Gleeson, George Walter, 1905 2
- Martin, Wallace Hope, 1885 2
- Oregon State Agricultural College. Engineering Experiment Station2
- Everest, F. Alton (Frederick Alton), 1909 1
- Gleeson, G. W.1
- Griffith, James Rinaldo, 1894 1
- Johnson, Raymond Hawley, 1905 1
- Paul, W. H.1
- Starker, T. J. (Thurman James), 1890 19831
- Starr, Eugene Carl, 1901 1