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
- 136 more...
- ItemChristianson000207 - Burlington Northern Diesel Locomotives Numbers 5550 and 7807 at Sterling, Colorado in 1981
- ItemChristianson000208 - Burlington Northern Diesel Locomotive Number 5585 at Fort Worth, Texas in 1981
- ItemChristianson000209 - Burlington Northern Diesel Locomotives Numbers 5617 and 6156 at Saint Paul, Minnesota in 1980
- ItemChristianson000210 - Burlington Northern Diesel Locomotives Numbers 5627 and 5637 and 5673 at Daytons Bluff, Minnesota in 1980
- ItemChristianson000211 - Burlington Northern Diesel Locomotives Numbers 5640 and 7887 at Minneapolis, Minnesota in 1980
- ItemChristianson000212 - Burlington Northern Diesel Locomotives Numbers 5627 and 5637 and 5673 at Daytons Bluff, Minnesota in 1980
- ItemChristianson000213 - Burlington Northern Diesel Locomotive Number 5704 at Wishram, Washington in 1974
- ItemChristianson000214 - Burlington Northern Diesel Locomotives Numbers 5764 and 5750 and 6910 and 5712 at Daytons Bluff, Minnesota in 1980
- ItemChristianson000215 - Burlington Northern Diesel Locomotives Numbers 5728 and 8028 at Minneapolis, Minnesota in 1980
- 60 more...