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
- 265 more...
- ItemChristianson000336 - Burlington Northern Train 200 in Valley City, North Dakota in 1981
- ItemChristianson000337 - Burlington Northern Train 23 in Luverne, North Dakota in 1981
- ItemChristianson000338 - Burlington Northern Train 80 on Gassman Coulee bridge near Minot, 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
- ItemChristianson000341 - Burlington Northern Diesel Locomotives Numbers 1355, 717 and 645 in Fergus Falls, Minnesota in 1980
- ItemChristianson000342 - Burlington Northern Diesel Locomotives Numbers 1355, 717, and 645 in Fergus Falls, Minnesota in 1980
- ItemChristianson000343 - Burlington Northern Diesel Locomotives Numbers 1403, 2094, and 2001 in Coon Rapids, Minnesota in 1981
- ItemChristianson000344 - Burlington Northern Diesel Locomotives Numbers 1403, 2094, and 2001 in Coon Rapids, Minnesota in 1981
- 6 more...