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
- 148 more...
- ItemChristianson000219 - Burlington Northern Diesel Locomotives Numbers 5764 and 5750 and 6910 and 5712 at Daytons Bluff, Minnesota in 1980
- ItemChristianson000220 - Burlington Northern Diesel Locomotives Numbers 5764 and 5750 at Daytons Bluff, Minnesota in 1980
- ItemChristianson000221 - Burlington Northern Diesel Locomotives Numbers 5812 and 5598 west of Mullen, Nebraska in 1981
- ItemChristianson000222 - Burlington Northern Diesel Locomotives Numbers 5812 and 5598 west of Mullen, Nebraska in 1981
- ItemChristianson000223 - Burlington Northern Diesel Locomotives Numbers 5812 and 5598 east of Alliance, Nebraska in 1981
- ItemChristianson000224 - Burlington Northern Diesel Locomotives Numbers 5812 and 5598 west of Mullen, Nebraska in 1981
- ItemChristianson000225 - Burlington Northern Diesel Locomotives Numbers 5812 and 5598 west of Mullen, Nebraska in 1981
- ItemChristianson000251 - Burlington Northern Diesel Locomotive Number 6252 and Two Precision Lease Engines at Dayton's Bluff, Minnesota, 1979
- ItemChristianson000252 - Burlington Northern Diesel Locomotive Number 6342 in Minneapolis, Minnesota, 1981
- 48 more...