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
- 26 more...
- ItemJMF04-02427.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02428.0 - Northern Pacific dispatchers office at Tacoma, Washington, circa 1962.
- ItemJMF04-02429.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02430.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02431.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1966.
- ItemJMF04-02432.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1968.
- ItemJMF04-02433.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1968.
- ItemJMF04-02434.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1968.
- ItemJMF04-02435.0 - Northern Pacific dispatchers office at Tacoma, Washington, in 1968.
- 36 more...