Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroad Buildings and Structures
- Subseries Level 3001 - Bridges
- 21 more...
- ItemJMF04-02815.0 - Northern Pacific bridge number 5 at Stampede Pass, Washington Territory, 1887.
- ItemJMF04-02816.0 - Northern Pacific bridge number 8 at Stampede Pass, Washington Territory, 1887.
- ItemJMF04-02817.0 - Northern Pacific bridge number 10 at Stampede Pass, Washington Territory, 1887.
- ItemJMF04-02818.0 - Northern Pacific bridge number 11 at Stampede Pass, Washington Territory, 1887.
- ItemJMF04-02819.0 - Northern Pacific bridge number 40 over Yakima River, Washington Territory, 1887.
- ItemJMF04-02822.0 - Northern Pacific trestle near Ellensburg, Washington Territory, 1887.
- ItemJMF04-02823.0 - Northern Pacific trestle near Ellensburg, Washington Territory, 1887.
- ItemJMF04-02824.0 - Northern Pacific bridge number 13, Stampede Pass, Washington Territory, 1887.
- ItemJMF04-02825.0 - Northern Pacific bridge number 15 at Cabin Creek, Washington Territory, 1887.
- 49 more...