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- Parks 64
- Forests and forestry 14
- Redwoods 13
- Civilian Conservation Corps (U.S.) 6
- Picnic grounds 5
- Railroad stations 3
- Rivers--Oregon 3
- Birds--Conservation 2
- Children 2
- College buildings 2
- Deers 2
- Footbridges 2
- Tables 2
- Trails 2
- Water--Pollution 2
- Wildlife refuges 2
- Bathrooms 1
- Boathouses 1
- Buildings 1
- Corvallis (Or.) 1