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 3003 - Freight Cars
- 239 more...
- Itemimg654 - Great Northern Boxcar 38233 at Denver, Colorado, 1984
- Itemimg655 - Great Northern Boxcar 138423 at Albuquerque, New Mexico, 1978
- Itemimg656 - Great Northern Boxcar 138439 at Albuquerque, New Mexico, 1984
- Itemimg657 - Great Northern Boxcar 138462 at Denver, Colorado, 1967
- Itemimg658 - Great Northern Boxcar 138510 at Denver, Colorado, 1990
- Itemimg659 - Great Northern Boxcar 138572 at Ferndale, Washington, 1992
- Itemimg660 - Great Northern Boxcar 138586 at Pasco, Washington, 1982
- Itemimg661 - Great Northern Boxcar 138589 at Pasco, Washington, 1983
- Itemimg662 - Great Northern Boxcar 138610 at Albuquerque, New Mexico, 1984
- 271 more...