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
- 67 more...
- ItemChristianson0000100 - Burlington Northern diesel locomotive Number 778 at Minneapolis, Minnesota in 1981
- ItemChristianson00127 - Burlington Northern Diesel Locomotives Number 1355, Number 717, Number 645 and an Unidentified F Unit at Fergus Falls, Minnesota In 1980
- ItemChristianson00128 - Burlington Northern Diesel Locomotives Number 1355 and Three Unidentified F Units at Fergus Falls, Minnesota In 1980
- ItemChristianson00129 - Burlington Northern Diesel Locomotives Number 1403, Number 2094 and an Unidentified GP In 1981
- ItemChristianson00130 - Burlington Northern Diesel Locomotives Number 1403, and Two Unidentified GP's In 1981
- ItemChristianson00131 - Burlington Northern Diesel Locomotives Number 1406 and Number 2035 at Fargo, North Dakota In 1981
- ItemChristianson00132 - Burlington Northern Diesel Locomotive Number 1408 With Covered Hoppers at Dayton's Bluff, Minnesota In 1981
- ItemChristianson00133 - Burlington Northern Diesel Locomotives Number 1409 and Number 1410 at Dayton's Bluff, Minnesota In 1981
- ItemChristianson00134 - Burlington Northern Diesel Locomotive Number 1413 With Freight Cars at Saint Cloud, Minnesota In 1981
- 37 more...