Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3001 - Bridges
- ItemJMF04-02667.0 - Burlington Northern bridge at Snow Creek, Washington, in 1979.
- ItemJMF04-02671.0 - Burlington Northern viaduct at Weston, Washington, circa 1980.
- ItemJMF04-02672.0 - Burlington Northern viaduct at Weston, Washington, in 1970.
- ItemJMF04-02673.0 - Burlington Northern viaduct at Weston, Washington, in 1970.
- ItemJMF04-02962.0 - Burlington Northern bridge at Tacoma, Washington, in 1971.
- ItemJMF04-02963.0 - Burlington Northern bridge at Tacoma, Washington, in 1971.
- ItemJMF04-02964.0 - Burlington Northern bridge at Tacoma, Washington, in 1971.
- ItemJMF04-02965.0 - Burlington Northern bridge at Tacoma, Washington, in 1970.
- ItemJMF04-02966.0 - Burlington Northern bridge at Tacoma, Washington, in 1970.
- 9 more...