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
- 5 more...
- ItemJMF04-02406.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1957
- ItemJMF04-02407.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1957
- ItemJMF04-02408.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02409.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02410.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02411.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02412.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02413.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02414.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- 57 more...