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
- 291 more...
- ItemChristianson000312 - Burlington Northern Diesel Locomotives Number 7837 and Number 6826 with a Freight Manifest Passing Burlington Northern Boxcar Number 196716 at Dayton's Bluff, Minnesota in 1981
- ItemChristianson000313 - Burlington Northern Diesel Locomotives Number 7859, Number 5019, Number 5558 and Number 7182 with a Unit Coal Train at Dayton's Bluff, Minnesota in 1981
- ItemChristianson000314 - Burlington Northern Diesel Locomotives Number 7865 and Number 8026 with a Freight Manifest at Wahpeton, North Dakota in 1980
- ItemChristianson000315 - Burlington Northern Diesel Locomotives Number 7887, Number 7893 and Number 6766 at Saint Paul, Minnesota in 1980
- ItemChristianson000316 - Burlington Northern Diesel Locomotives Number 7891 and Number 7901 at Valley City, North Dakota in 1981
- ItemChristianson000317 - Burlington Northern Diesel Locomotives Number 7892 and Number 7864 at Minneapolis, Minnesota in 1982
- ItemChristianson000318 - Burlington Northern Diesel Locomotives Number 7904 and Number 6713 with a Freight Manifest at Newport, Minnesota in 1980
- ItemChristianson000319 - Burlington Northern Diesel Locomotives Number 7904 and Number 6713 with a Freight Manifest at Saint Paul, Minnesota in 1980
- ItemChristianson000320 - Burlington Northern Diesel Locomotives Number 7904 and Number 6713 with a Freight Manifest at Newport, Minnesota in 1980
- 30 more...