Railroad Archives Online
- FondD0011 - James M. Fredrickson Collection
- Sorozat004 - Northern Pacific Railroad Company
- Alsorozat014 - Photographs
- 004 - Railroad Tracks
- 003 - Railroad yards
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- IratdarabJMF04-02564.0 - Northern Pacific freight yard at Auburn, Washington, on August 10, 1967.
- IratdarabJMF04-02565.0 - Northern Pacific freight yard at Auburn, Washington, on August 10, 1967.
- IratdarabJMF04-02571.0 - Northern Pacific yard tracks at Orillia, Washington, in July 1967.
- IratdarabJMF04-02572.0 - Northern Pacific yard tracks at Orillia, Washington, in July 1967.
- IratdarabJMF04-02580.0 - Northern Pacific yard at Kanaskat, Washington, circa 1935.
- IratdarabJMF04-02595.0 - Northern Pacific spur track at Eagle Gorge, Washington, in 1960.
- IratdarabJMF04-02602.0 - Northern Pacific tracks at Eagle Gorge, Washington, in 1960.
- IratdarabJMF04-02776.0 - Northern Pacific track at Cabin Creek, Washington, in 1967.
- IratdarabJMF04-02780.0 - Northern Pacific yard at Easton, Washington, in 1944.
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