Railroad Archives Online
- CollectionD0504b - Al Christianson Collection - Friends of the Burlington Northern Railroad
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 473 more...
- ItemChristianson000553 - Burlington Northern 8139 at Big Lake, Minnesota in 1981
- ItemChristianson000554 - Burlington Northern 8155 at Minneapolis, Minnesota in 1982
- ItemChristianson000555 - Burlington Northern 8158 at Minneapolis, Minnesota in 1981
- ItemChristianson000556 - Burlington Northern 8162 at Fort Worth, Texas in 1981
- ItemChristianson000557 - Burlington Northern 8167 at Minneapolis, Minnesota in 1982
- ItemChristianson000558 - Burlington Northern 8178 at Big Lake, Minnesota in 1980
- ItemChristianson000559 - Burlington Northern 8034 at Minneapolis, Minnesota in 1980
- ItemChristianson000560 - Burlington Northern 9758 at Minneapolis, Minnesota in 1976
- ItemChristianson000561 - Burlington Northern 9917 at Chicago, Illinois in 1981
- 77 more...