Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad tracks
- Subseries Level 3002 - Railroad crossings
- ItemJMF04-03147.0 - Burlington Northern grade crossing at Curtis, Washington, in 1976.
- ItemJMF17-12797.0 - Burlington Northern locomotive 626 at McCarver Street, Washington in 1977.