Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3003 - Freight Cars
- ItemJMF11-09964.0 - Burlington Northern chip cars at Hoquiam, Washington, in October 1974.
- ItemJMF19-14222.4 - Burlington Northern Railroad freight train 121 at Between Logan and Helena, Montana, on August 3, 1987.
- ItemJMF19-14222.5 - Burlington Northern Railroad freight train 121 at Logan, Montana, on August 3, 1987.
- ItemJMF19-14222.3 - Burlington Northern Railroad trailer on flat car train 121 at Kansas City, Missouri, on August 1, 1987.
- ItemJMF19-14222.6 - Burlington Northern Railroad trailer on flat car train 7815 at Edwall, Washington, on August 4, 1987.
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