Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad Tracks
- Subseries Level 3003 - Railroad yards
- ItemJMF04-02507.0 - Northern Pacific Half-Moon yard at Tacoma, Washington, circa 1889.
- ItemJMF04-02509.0 - Northern Pacific Half-Moon yard at Tacoma, Washington, circa 1880
- ItemJMF04-02512.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1925.
- ItemJMF04-02513.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1935.
- ItemJMF04-02546.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1920.
- ItemJMF04-02563.0 - Northern Pacific freight yard at Auburn, Washington, circa 1925.
- 28 more...