Railroad Archives Online
- FondsD0011 - James M. Fredrickson Collection
- Serie004 - Northern Pacific Railroad Company
- Teilserie014 - Photographs
- 004 - Railroad Tracks
- 003 - Railroad yards
- ObjektJMF04-02507.0 - Northern Pacific Half-Moon yard at Tacoma, Washington, circa 1889.
- ObjektJMF04-02509.0 - Northern Pacific Half-Moon yard at Tacoma, Washington, circa 1880
- ObjektJMF04-02512.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1925.
- ObjektJMF04-02513.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1935.
- ObjektJMF04-02546.0 - Northern Pacific freight yard at Tacoma, Washington, circa 1920.
- ObjektJMF04-02563.0 - Northern Pacific freight yard at Auburn, Washington, circa 1925.
- ObjektJMF04-02564.0 - Northern Pacific freight yard at Auburn, Washington, on August 10, 1967.
- ObjektJMF04-02565.0 - Northern Pacific freight yard at Auburn, Washington, on August 10, 1967.
- ObjektJMF04-02571.0 - Northern Pacific yard tracks at Orillia, Washington, in July 1967.
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