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
- 188 more...
- Itemimg603 - Great Northern Boxcar 138184 at Boulder, Colorado, 1973
- Itemimg604 - Great Northern Boxcar 138186 at Albuquerque, New Mexico, 1978
- Itemimg605 - Great Northern Boxcar 138196 at Pasco, Washington, 1983
- Itemimg606 - Great Northern Boxcar 138262 at Albuquerque, New Mexico, 1980
- Itemimg607 - Great Northern Boxcar 138262 at Albuquerque, New Mexico, 1980
- Itemimg608 - Great Northern Boxcar 138296 at Albuquerque, New Mexico, 1980
- Itemimg609 - Great Northern Boxcar 138304 at Pasco, Washington, 1983
- Itemimg610 - Great Northern Boxcar 138320 at Tucumcari, New Mexico, 1987
- Itemimg611 - Great Northern Boxcar 138385 at Albuquerque, New Mexico, 1980
- 322 more...