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Creator
- Henderson, Robert W. (Robert Wesley), 1914-2006 142
- Oregon Century Farm & Ranch Program 75
- Hatch, Raymond W. 22
- Johnson, Folger 16
- Holford, William 13
- Lawrence, Ellis Fuller 13
- Lawrence and Holford 8
- Hummel, Charles Frederick, 1925- 7
- McCune, Bruce 7
- Tourtellotte & Hummel 7
- Tourtellotte, John E. 7
- Allyn, Frederick S. 5
- Lawrence, Holford, and Allyn 5
- Neer, Delos D. 5
- Cahoon, John 4
- Agri-Times Northwest 2
- Curl, F. S. 2
- Erb & Van Patten Company 2
- Howard Brothers 2
- Howard, Theodore F. 2
