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
- 17 more...
- ItemWingfield.28 - Burlington Northern Diesel Locomotives 6418, 428, 423 at Trego, Montana, 1970
- ItemWingfield.29 - Burlington Northern Diesel Locomotive 6429 at Whitefish, Montana, 1970
- ItemWingfield.30 - Burlington Northern Diesel Locomotives 6436, 430, 3613 at Glacier Park, Montana, 1970
- ItemWingfield.31 - Burlington Northern Diesel Locomotive 6446 at Glacier Park, Montana, 1970
- 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
- 54 more...