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 3002 - Diesel Locomotives
- 21 more...
- ItemWingfield.32 - Burlington Northern Diesel Locomotives 6600, 4240 at Whitefish, Montana, 1970
- ItemWingfield.33 - Burlington Northern Diesel Locomotives 6612, 6607 at Summit, Montana, 1971
- ItemWingfield.34 - Burlington Northern Diesel Locomotives 9850, 9727, 9743 at Belton, Montana, 1970
- ItemWingfield.35 - Burlington Northern Diesel Locomotives 9854, 9853 at Flathead Tunnel, Montana, 1970
- ItemWingfield.36 - Burlington Northern Diesel Locomotives 9854, 9853 at Flathead Tunnel, Montana, 1970
- ItemWingfield.37 - Burlington Northern Diesel Locomotives 9855 at Bonners Ferry, Idaho, 1970
- ItemWingfield.38 - Burlington Northern Diesel Locomotives 9856, 9747, 2061 at Whitefish, Montana, 1970
- ItemWingfield.39 - Burlington Northern Diesel Locomotives 9860, 9739 at Eureka, Montana, 1970
- ItemWingfield.40 - Burlington Northern Diesel Locomotive 145 at Great Falls, Montana, 1971
- 50 more...