Railroad Archives Online
- フォンドD0011 - James M. Fredrickson Collection
- シリーズ004 - Northern Pacific Railroad Company
- サブシリーズ014 - Photographs
- 003 - Railroad Buildings and Structures
- 007 - Tunnels
- 14 more...
- アイテムJMF04-02725.0 - Northern Pacific Stampede Tunnel at Martin, Washington, in 1943.
- アイテムJMF04-02726.0 - Northern Pacific Stampede Tunnel at Martin, Washington, in 1943.
- アイテムJMF04-02738.0 - Northern Pacific tunnel at Martin, Washington, in 1945.
- アイテムJMF04-02750.0 - Cub Scouts at Martin, Washington, in 1959.
- アイテムJMF04-02753.0 - Jim Fredrickson's tunnel at Martin, Washington, circa 1960.
- アイテムJMF04-02757.0 - Northern Pacific tracks and buildings at Martin, Washington, circa 1950.
- アイテムJMF04-02771.0 - Northern Pacific mainline near Martin, Washington, in 1952.
- アイテムJMF04-02877.0 - Northern Pacific Stampede Tunnel, Washington State, circa 1890.
- アイテムJMF04-03178.0 - Northern Pacific tunnel at Grangeville, Idaho, circa 1910.
- 2 more...