Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroad Buildings and Structures
- Subseries Level 3005 - Signals and Signs
- 39 more...
- ItemJMF04-02442.0 - Northern Pacific dispatchers office at Tacoma, Washington, circa 1962.
- ItemJMF04-02443.0 - Northern Pacific dispatchers office at Tacoma, Washington, circa 1962.
- ItemJMF04-02444.0 - Northern Pacific dispatchers office at Tacoma, Washington, circa 1962.
- ItemJMF04-02445.0 - Northern Pacific signal equipment at Tacoma, Washington, in 1967.
- ItemJMF04-02446.0 - Northern Pacific signal equipment at Tacoma, Washington, in 1967.
- ItemJMF04-02447.0 - Northern Pacific signal equipment at Tacoma, Washington, in 1967.
- ItemJMF04-02448.0 - Northern Pacific signal equipment at Tacoma, Washington, in 1967.
- ItemJMF04-02449.0 - Northern Pacific signal equipment at Tacoma, Washington, in 1967.
- ItemJMF04-02450.0 - Northern Pacific signal equipment at Tacoma, Washington, in 1967.
- 23 more...