Railroad Archives Online
- FondD0011 - James M. Fredrickson Collection
- Sorozat004 - Northern Pacific Railroad Company
- Alsorozat014 - Photographs
- 004 - Railroad Tracks
- 003 - Railroad yards
- IratdarabJMF04-02507.0 - Northern Pacific Half-Moon yard at Tacoma, Washington, circa 1889.
- IratdarabJMF04-02509.0 - Northern Pacific Half-Moon yard at Tacoma, Washington, circa 1880
- IratdarabJMF04-02512.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1925.
- IratdarabJMF04-02513.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1935.
- IratdarabJMF04-02546.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1920.
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