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
- 200 more...
- Itemimg615 - Great Northern Boxcar 138827 at Amarillo, Texas, 1996
- Itemimg616 - Great Northern Boxcar 138833 at Albuquerque, New Mexico, 1980
- Itemimg617 - Great Northern Boxcar 138923 at Albuquerque, New Mexico, 1980
- Itemimg618 - Great Northern Boxcar 138961 at Albuquerque, New Mexico, 1978
- Itemimg619 - Great Northern Boxcar 138997 at Pasco, Washington, 1990
- Itemimg620 - Great Northern Boxcar 319107 at Bellingham, Washington, 1993
- Itemimg621 - Great Northern Boxcar 319140 at Idaho Falls, Idaho, 1991
- Itemimg622 - Great Northern Boxcar 319172 at Denver, Colorado, 1990
- Itemimg623 - Great Northern Boxcar 319175 at Albuquerque, New Mexico, 1982
- 310 more...