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
- 222 more...
- Itemimg637 - Great Northern Boxcar 319313 at Denver, Colorado, 1989
- Itemimg638 - Great Northern Boxcar 319327 at Denver, Colorado, 1990
- Itemimg639 - Great Northern Boxcar 319356 at Broomfield, Colorado, 1990
- Itemimg640 - Great Northern Boxcar 319373 at Amarillo, Texas, 1996
- Itemimg641 - Great Northern Boxcar 319376 at Denver, Colorado, 1989
- Itemimg642 - Great Northern Boxcar 319381 at Belen, New Mexico, 1991
- Itemimg643 - Great Northern Boxcar 319443 at Pasco, Washington, 1992
- Itemimg644 - Great Northern Boxcar 319458 at Bellingham, Washington, 1993
- Itemimg645 - Great Northern Boxcar 319467 at Albuquerque, New Mexico, 1979
- 288 more...