Subject
- Professional paper (Geological Survey (U.S.))2
- Agriculture -- Oregon -- Experimentation1
- Agriculture -- Study and teaching -- Oregon1
- Bulletin (United States. Bureau of Forestry)1
- Circular (United States. Forest Service)1
- Conifers -- Diseases and pests -- United States1
- Forest insects1
- Forest reserves -- Law and legislation -- United States -- Handbooks, manuals, etc.1
- Forest reserves -- Puerto Rico -- Luquillo Experimental Forest1
- Forest reserves -- United States -- Handbooks, manuals, etc.1
- Forests and forestry -- Appalachian Region, Southern1
- Forests and forestry -- Congresses1
- Forests and forestry -- Handbooks, manuals, etc.1
- Forests and forestry -- New Mexico -- Gila National Forest1
- Indians of North America -- Oregon1
- Indians of North America -- Oregon -- Portraits1
- Insect pests1
- Lewis and Clark Centennial Exposition (1905 : Portland, Or.)1
- Luquillo Experimental Forest (P.R.)1
- Mountain pine beetle -- United States1