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 3005 - Maintenance of Way cars
- 39 more...
- Itemimg265 - Great Northern Maintenance of Way Tool Car O6001 at Bellingham, Washington, 1969
- Itemimg266 - Great Northern Maintenance of Way Tool Car O6021 at Bellingham, Washington, 1966
- Itemimg267 - Great Northern Maintenance of Way ex-Boxcar O6040 at Cle Elum, Washington, 1999
- Itemimg268 - Great Northern Maintenance of Way ex-Boxcar O6040 at Cle Elum, Washington, 1999
- Itemimg269 - Great Northern Water Car X6500 at Bellingham, Washington, 1982
- Itemimg270 - Great Northern Water Car X6500 at Bellingham, Washington, 1982
- Itemimg271 - Great Northern Water Car X6500 at Bellingham, Washington, 1982
- Itemimg272 - Great Northern Water Car X6500 at Bellingham, Washington, 1982
- Itemimg273 - Great Northern Maintenance of Way Flatcar X6706 at Bellingham, Washington, 1968
- 4 more...