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
- 71 more...
- 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
- ItemChristianson00135 - Burlington Northern Diesel Locomotives Number 1422 and Number 1869 at Portland, Oregon In 1982
- ItemChristianson00136 - Burlington Northern Diesel Locomotive Number 1550 at Minneapolis, Minnesota In 1981
- ItemChristianson00137 - Burlington Northern Diesel Locomotives Number 995 and Number 993 East of Milnor, North Dakota In 1981
- ItemChristianson00138 - Burlington Northern Diesel Locomotives Number 995 and Number 993 at Milnor, North Dakota In 1981
- 33 more...