Subject
- Fur trade -- Oregon2
- Agriculture -- Oregon1
- Apples1
- Astor, John Jacob, 1763-18481
- Astoria (Or.)1
- Circular (United States. General Land Office)1
- Ecological carrying capacity -- Montana -- Lewis and Clark National Forest1
- Eggs1
- Farm management1
- Fertilizers -- Oregon1
- Food -- Fat content1
- Forest reserves -- United States1
- Forestry law and legislation -- United States1
- Forests and forestry -- United States1
- Fur trade -- North America1
- Irrigation -- Washington (State) -- Columbia River Valley1
- Land settlement -- Law and legislation -- United States1
- Land use -- Law and legislation -- United States1
- Lumber trade -- Military aspects1
- Mountain roads -- Oregon1