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
- 52 more...
- ItemChristianson000085 - Burlington Northern diesel locomotives Number 600, Number 6117 at Minneapolis, Minnesota in 1981
- ItemChristianson000086 - Burlington Northern diesel locomotive Number 710 at Saint Cloud, Minnesota in 1980
- ItemChristianson000087 - Burlington Northern diesel locomotive Number 710 at Brekenridge, Minnesota in 1980
- ItemChristianson000088 - Burlington Northern diesel locomotives Number 714, Number 2005 at Staples, Minnesota in 1979
- ItemChristianson000089 - Burlington Northern diesel locomotives Number 766, Number 781, Number 783, Number 792 at Fridley, Minnesota in 1980
- ItemChristianson000090 - Burlington Northern diesel locomotives Number 766, Number 781, Number 783, Number 792 at Fridley, Minnesota in 1980
- ItemChristianson000091 - Burlington Northern diesel locomotives Number 768, Number 783 at Carlisle, Minnesota in 1980
- ItemChristianson000092 - Burlington Northern diesel locomotives Number 768, Number 733, Number 2027, Number 790 at Fridley, Minnesota in 1981
- ItemChristianson000093 - Burlington Northern diesel locomotives Number 768, Number 783 at Carlisle, Minnesota in 1980
- 7 more...