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
- 111 more...
- 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
- ItemChristianson00034 - Burlington Northern Diesel Locomotives Number 116 and Number 501 Among Other Unidentified Locomotives at Kansas City, Missouri In 1980
- ItemChristianson00035 - Burlington Northern Diesel Locomotive Number 117 at Kansas City, Missouri In 1980
- ItemChristianson00036 - Burlington Northern Diesel Locomotive Number 119 at Denver, Colorado In 1981
- ItemChristianson00037 - Burlington Northern Diesel Locomotives Number 138 and Number 141 at Saint Paul, Minnesota In 1979
- ItemChristianson00038 - Burlington Northern Diesel Locomotives Number 138 and Number 141 at Saint Paul, Minnesota In 1979
- ItemChristianson00039 - Burlington Northern Diesel Locomotive Number 138 at Saint Paul, Minnesota In 1979
- ItemChristianson00040 - Burlington Northern Diesel Locomotive Number 141 and Burlington Northern Business Cars Como and Lake Superior at Minneapolis, Minnesota In 1982
- 60 more...