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
- 27 more...
- Itemimg253 - Great Northern Maintanance of Way ex-Baggage Car O3292, undated
- Itemimg254 - Great Northern Maintenance of Way ex-Passenger Car O3380 at Bellingham, Washington, 1974
- Itemimg255 - Great Northern Maintenance of Way ex-Passenger Car O3380 at Bellingham, Washington, 1974
- Itemimg256 - Great Northern Maintenance of Way Tool and Bunk Car O3582 at Bellingham, Washington, 1966
- Itemimg257 - Great Northern Maintenance of Way Flatcar O3601 at Skykomish, Washington, 1987
- Itemimg258 - Great Northern Maintenance of Way Tool Car O3644 at Bellingham, Washington, 1974
- Itemimg259 - Great Northern Maintenance of Way Tool Car O3685, undated
- Itemimg260 - Great Northern Maintenance of Way Flatcar X5160 at Bellingham, Washington, 1974
- Itemimg261 - Great Northern Maintenance of Way Tool Car X5180, undated
- 16 more...