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
- 460 more...
- ItemChristianson000540 - Burlington Northern Diesel Locomotive 7927 at Fargo, North Dakota in 1981
- ItemChristianson000541 - Burlington Northern Diesel Locomotive 7929 at Minneapolis, Minnesota in 1982
- ItemChristianson000542 - Burlington Northern Diesel Locomotive 7930 at Minneapolis, Minnesota in 1982
- ItemChristianson000543 - Burlington Northern Diesel Locomotive 7930 at Minneapolis, Minnesota in 1982
- ItemChristianson000544 - Burlington Northern Diesel Locomotive 8001 at Minneapolis, Minnesota in 1981
- ItemChristianson000545 - Burlington Northern Diesel Locomotive 8028 at Newport, Minnesota in 1981
- ItemChristianson000546 - Burlington Northern Diesel Locomotive 8034 at Minneapolis, Minnesota in 1980
- ItemChristianson000547 - Burlington Northern Diesel Locomotive 8037 at Saint Paul, Minnesota in 1980
- ItemChristianson000548 - Burlington Northern Diesel Locomotive 8037 at Saint Paul, Minnesota in 1980
- 90 more...