Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 92 more...
- Itemimg335 - Great Northern Diesel Locomotive 323 at New Westminster, British Columbia, 1968
- Itemimg336 - Great Northern Diesel Locomotive at Blaine, Washington, 1968
- Itemimg337 - Great Northern Diesel Locomotive 370C at Bellingham, Washington, 1968
- Itemimg338 - Great Northern Diesel Locomotive 370C at Bellingham, Washington, 1966
- Itemimg339 - Great Northern Diesel Locomotive 370C at Bellingham, Washington, 1966
- Itemimg34 - Great Northern Diesel Locomotive 355A at Wenatchee, Washington, 1967
- Itemimg340 - Great Northern Diesel Locomotive 370C at Bellingham, Washington, 1966
- Itemimg341 - Great Northern Diesel Locomotive 370C at Bellingham, Washington, 1966
- Itemimg342 - Great Northern Diesel Locomotive 657 at Bellingham, Washington, 1966
- 127 more...