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
- 176 more...
- ItemChristianson000272 - Burlington Northern Diesel Locomotives Number 6710 and Number 6701 at Cottage Grove, Minnesota, 1982
- ItemChristianson000273 - Burlington Northern Diesel Locomotives Number 6716, Number 777 and Number 774 at Saint Cloud, Minnesota, 1981
- ItemChristianson000274 - Burlington Northern Diesel Locomotives Number 6708, Number 6754 and Number 6726 at Newport, Minnesota, 1980
- ItemChristianson000275 - Burlington Northern Diesel Locomotives Number 6708, Number 6754 and Number 6726 at Newport, Minnesota, 1980
- ItemChristianson000226 - Burlington Northern Diesel Locomotive Number 5095, Missouri Pacific Diesel Locomotive Number 6060 and another Missouri Pacific Diesel at Kansas City, Missouri in 1980
- ItemChristianson000227 - Burlington Northern Diesel Locomotive Number 5095, Missouri Pacific Diesel Locomotive Number 6060 and another Missouri Pacific Diesel at Kansas City, Missouri in 1980
- ItemChristianson000228 - Burlington Northern Diesel Locomotives Number 5200, Number 5206 and Number 5204 with a Freight Manifest at Sterling, Kansas in 1981
- ItemChristianson000229 - Burlington Northern Diesel Locomotives Number 5450, Number 3003 and Number 2242 with a Freight Manifest at Saint Paul, Minnesota in 1981
- ItemChristianson000230 - Burlington Northern Diesel Locomotive Number 5550, and three other Burlington Northern Diesel Locomotives with a Freight Train at Sterling, Kansas in 1981
- 20 more...