Subject
- Forests and forestry5
- Log transportation5
- Log transportation--Equipment and supplies5
- Logging5
- Logging railroads5
- Railroads[remove]5
- Timber5
- Logging--Equipment and supplies4
- Logging--Machinery4
- Lumber camps2
- Railroad cars2
- Douglas fir1
- Locomotives1
- Lumber trade1
- Steam locomotives1
- Trestles1
- Trestles--Design and construction1
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