Railroad Archives Online
- CollectionD0153 - Doug Wingfield Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 8 more...
- ItemWingfield.66 - Great Northern Diesel Locomotive 367A at Spokane, Washington, 1968
- ItemWingfield.67 - Great Northern Diesel Locomotive 369C at Spokane, Washington, 1968
- ItemWingfield.68 - Great Northern Diesel Locomotive 369C, 367B, 374B at Spokane, Washington, 1968
- ItemWingfield.69 - Great Northern Diesel Locomotive 369C, 367B, 374B at Spokane, Washington, 1968
- ItemWingfield.70 - Great Northern Diesel Locomotive 602, 653 at Humboldt, Minnesota, 1969
- ItemWingfield.72 - Great Northern Diesel Locomotive 689 at Spokane, Washington, 1968
- ItemWingfield.73 - Great Northern Diesel Locomotive 721 at Oroville, Washington, 1968
- ItemWingfield.75 - Great Northern Diesel Locomotive 3000 at Sandpoint, Idaho, 1968
- ItemWingfield.76 - Great Northern Diesel Locomotive 3000, 3014 at Sandpoint, Idaho, 1968
- 22 more...