- Oregon Agricultural College -- Alumni and alumnae -- Directories3
- Oregon -- History2
- American literature -- 19th century1
- Electric power-plants -- United States1
- Forest management -- Environmental aspects -- Northwest, Pacific1
- Forests and forestry -- Missouri1
- Forests and forestry -- Northwest, Pacific1
- Forests and forestry -- Ozark Mountains1
- Habitat (Ecology)1
- Land use -- Oregon -- Yamhill County -- Planning1
- Land use, Rural -- Oregon -- Yamhill County -- Planning1
- Northern spotted owl -- Northwest, Pacific1
- Northwest, Pacific1
- Old growth forests -- Government policy -- Northwest, Pacific1
- Old growth forests -- Northwest, Pacific1
- Oregon State Agricultural College1
- Regional planning -- Oregon -- Yamhill County1
- Trusts, Industrial1
- Wildlife conservation -- Northwest, Pacific1
- Women pioneers -- Northwest, Pacific1