Subject
- Cattle -- Feeding and feeds4
- Oregon Agricultural College. Experiment Station4
- Agriculture -- Oregon -- Experimentation3
- Frontier and pioneer life -- Oregon3
- Overland journeys to the Pacific3
- Agriculture -- Oregon2
- Alfalfa2
- Creameries -- Oregon2
- Fur trade -- Oregon2
- Lambs -- Feeding and feeds2
- Land use -- Oregon -- Polk County -- Planning2
- Land use, Rural -- Oregon -- Polk County -- Planning2
- Oregon National Historic Trail2
- Oregon State Agricultural College. Agricultural Experiment Station2
- Pageants -- Oregon -- Eugene2
- Public lands -- United States2
- Regional planning -- Oregon -- Polk County2
- Agricultural experiment stations1
- Agriculture, Cooperative -- Oregon1
- Alfalfa -- Irrigation -- Oregon1