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
- 123 more...
- ItemChristianson000044 - Burlington Northern Diesel Locomotive Number 158 at Saint Paul, Minnesota In 1979
- ItemChristianson000045 - Burlington Northern Diesel Locomotive Number 159 at Minneapolis, Minnesota In 1981
- ItemChristianson000046 - Burlington Northern Diesel Locomotive Number 161 at Denver, Colorado In 1981
- ItemChristianson000047 - Burlington Northern Diesel Locomotive Number 170 at Minneapolis, Minnesota In 1979
- ItemChristianson000048 - Burlington Northern Diesel Locomotives Number 170, Number 452 and Number 305 at Minneapolis, Minnesota In 1979
- ItemChristianson000049 - Burlington Northern Diesel Locomotive Number 211 at Minneapolis, Minnesota In 1979
- ItemChristianson000050 - Burlington Northern Diesel Locomotive Number 211 at Minneapolis, Minnesota In 1979
- ItemChristianson000201 - Burlington Northern Diesel Locomotives Numbers 5504 and 7029, and a Milwaukee Road Diesel Locomotive at Minneapolis, Minnesota in 1979
- ItemChristianson000202 - Burlington Northern Diesel Locomotives Numbers 5520 and 5562 at Sterling, Colorado in 1981
- 73 more...