Railroad Archives Online
- CollectionD0153 - Doug Wingfield Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3011 - Railroad cars self-propelled
- ItemWingfield.44 - Great Northern Rail Diesel Car 2350 at Great Falls, Montana, 1971
- ItemWingfield.45 - Great Northern Rail Diesel Car 2350 at Great Falls, Montana, 1971