Creator
- Graf, Samuel Herman, 1887 9
- Oregon State College. Engineering Experiment Station2
- Bell, Chris1
- Dockendorf, Laurie1
- Gleeson, G. W.1
- Gleeson, George Walter, 1905 1
- Johnson, Raymond Hawley, 1905 1
- Oregon State Agricultural College. Engineering Experiment Station1
- Paul, W. H.1
- Ritchie, Dwight Dameron, 1914 1
- Selleck, Royal Raymond1