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Creator
- McCune, Bruce 177
- Oregon Century Farm & Ranch Program 59
- Henderson, Robert W. (Robert Wesley), 1914-2006 27
- Holderman, Woody 19
- Frazer, G. N. 11
- Page & Dimmick 11
- Hewitt, James 10
- Backen, Arrigoni and Ross 9
- Hummel, Frank K. 7
- Tourtellotte & Hummel 7
- Tourtellotte, John E. 7
- Kable, George W. 6
- Perkins, J. A. 6
- Barber, George Franklin 5
- Oregon. State Highway Department 4
- Belluschi, Pietro 3
- Freeman, Claud N. 3
- Wolff Zimmer Gunsul Frasca 3
- Aandahl, Frederick 2
- Holford, William 2