Railroad Archives Online
- CollectionD0504b - Al Christianson Collection - Friends of the Burlington Northern Railroad
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3001 - Railroad bridges(Draft)
- 2 more...
- ItemChristianson000003 - Burlington Northern Westbound Grain Train in Minot, North Dakota in 1981
- ItemChristianson000004 - Burlington Northern Westbound intermodal Train in Minneapolis, Minnesota in 1980
- ItemChristianson000005 - Burlington Northern Eastbound Coal Train in Valley City, North Dakota in 1981
- ItemChristianson000007 - Burlington Northern Westbound Empty Coal Train in Valley City, North Dakota in 1981
- ItemChristianson000339 - Burlington Northern Train 82 on Gassman Coulee bridge near Minot, North Dakota in 1981
- ItemChristianson000340 - Burlington Northern Train X200 in Valley City, North Dakota in 1981
- ItemChristianson000342 - Burlington Northern diesel locomotives Number 1355, Number 717, Number 645 in Fergus Falls, Minnesota in 1980
- ItemChristianson000346 - Burlington Northern diesel locomotive Number 1413 in Saint Cloud, Minnesota in 1981
- ItemChristianson000336 - Burlington Northern Train 200 in Valley City, North Dakota in 1981
- 3 more...