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
- 242 more...
- 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
- Itemimg663 - Great Northern Boxcar 138664 at Denver, Colorado, 1989
- Itemimg664 - Great Northern Boxcar 138681 at Albuquerque, New Mexico, 1981
- Itemimg665 - Great Northern Boxcar 139021 at Albuquerque, New Mexico, 1981
- 268 more...