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
- 83 more...
- 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
- ItemChristianson000199 - Burlington Northern Diesel Locomotives Number 5048 and 3 Unidentified Diesel Locomotives at Fort Worth, Texas in 1981
- ItemChristianson000200 - Burlington Northern Diesel Locomotives Number 5088 and 2 Unidentified Diesel Locomotives in 1981