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
- 78 more...
- ItemChristianson000190 - Burlington Northern Diesel Locomotives Number 2233, Number 2242 at Fremont, Nebraska in 1981
- ItemChristianson000191 - Burlington Northern Diesel Locomotives Number 2233, Number 2242 at Nickerson, Nebraska in 1981
- ItemChristianson000192 - Burlington Northern Diesel Locomotives Number 3026, Number 6301 and Precision Lease Engine at Saint Paul, Minnesota in 1980
- ItemChristianson000193 - Burlington Northern Diesel Locomotives Number 3026, Number 6301 and Precision Lease Engine at Saint Paul, Minnesota in 1980
- ItemChristianson000194 - Burlington Northern Diesel Locomotives Number 3028, Number 3002, Number 6051 at Daytons Bluff, Minnesota in 1980
- ItemChristianson000195 - Burlington Northern Diesel Locomotives Number 3028, Number 3002, Number 6051 at Newport, Minnesota in 1980
- ItemChristianson000196 - Burlington Northern Diesel Locomotives Number 3028, Number 3002 at Newport, Minnesota in 1980
- ItemChristianson000197 - Burlington Northern Diesel Locomotive Number 3029, Southern Pacific Diesel Locomotive, and Union Pacific Diesel Locomotives at Saint Paul, Minnesota in 1980
- ItemChristianson000198 - Burlington Northern Diesel Locomotives Number 5028, Number 5082, Number 5038, Number 7255, and Santa Fe Diesel Locomotives at Palmer Lake, Colorado in 1981
- 2 more...