Railroad Archives Online
- ArquivoD0011 - James M. Fredrickson Collection
- Série001 - Burlington Northern Railroad Company
- Subsérie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 002 - Diesel Locomotives
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- ItemJMF17-11447.0 - Burlington Northern diesel locomotive 4010 at Tacoma, Washington in 1972.
- ItemJMF17-11674.0 - Burlington Northern diesel locomotive 5641 at Missoula, Montana in 1972.
- ItemJMF17-11761.0 - Burlington Northern diesel locomotive 6158 at Custer, South Dakota in 1972.
- ItemJMF17-11779.0 - Burlington Northern diesel locomotive 6302 at Livingston, Montana in 1972.
- ItemJMF17-11780.0 - Burlington Northern diesel locomotive 6304 at Livingston, Montana in 1972.
- ItemJMF17-11781.0 - Burlington Northern diesel locomotive 6305 at Livingston, Montana in 1972.
- ItemJMF17-11900.0 - Burlington Northern diesel locomotive 6493 at Livingston, Montana in 1972.
- ItemJMF17-11952.0 - Burlington Northern diesel locomotive 6566 at Missoula, Montana in 1972.
- ItemJMF17-11981.0 - Burlington Northern diesel locomotive 6624 at Livingston, Montana in 1972.
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