- Amazon River1
- Bean industry -- Oregon, Western1
- Beans -- Processing -- Oregon, Western1
- Circular (United States. Bureau of Entomology)1
- Columbia River1
- El Dorado1
- Forest management -- Environmental aspects -- Northwest, Pacific1
- Forests and forestry -- Northwest, Pacific1
- Habitat (Ecology)1
- Lewis and Clark Expedition (1804-1806)1
- Northern spotted owl -- Northwest, Pacific1
- Northwest, Pacific -- History -- Outlines, syllabi, etc1
- Old growth forests -- Government policy -- Northwest, Pacific1
- Old growth forests -- Northwest, Pacific1
- Oregon -- Description and travel1
- Pine -- Diseases and pests1
- Spanish-American War, 1898 -- Campaigns -- Philippines1
- United States. Army. Oregon Volunteer Infantry Regiment, 2nd1
- White pine weevil1
- Wildlife conservation -- Northwest, Pacific1