Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad Tracks
- Subseries Level 3001 - Railroad mainline
- 12 more...
- ItemJMF04-03034.0 - Northern Pacific mainline at Tacoma, Washington, in 1928.
- ItemJMF04-03035.0 - Northern Pacific mainline at Tacoma, Washington, in 1928.
- ItemJMF04-03054.0 - Northern Pacific tracks at Nisqually, Washington, in 1967.
- ItemJMF04-03180.0 - Northern Pacific right-of-way at Granite, Idaho, in 1965.
- ItemJMF04-03181.0 - Northern Pacific right-of-way at Granite, Idaho, in 1965.
- ItemJMF04-03182.0 - Northern Pacific right-of-way at Granite, Idaho, in 1965.
- ItemJMF04-03183.0 - Northern Pacific right-of-way at Granite, Idaho, in 1965.
- ItemJMF04-03184.0 - Earth mover at Granite, Idaho, in 1965.
- ItemJMF11-09948.0 - Northern Pacific Railroad - Eagle Gorge Logging Company Junction at Eagle Gorge, Washington in 1949.