Railroad Archives Online
- CollectionE0437 - Jim Parker Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3003 - Freight Cars
- Item35342 - Great Northern Refrigerator Car Number 8609, Portland, Oregon, 1968
- Item35343 - Great Northern Refrigerator Car Number 8772, Wenatchee, Washington, 1969
- Item48387 - Great Northern Freight Car Number 973002, Galesburg, Illinois, 1983
- Item48388 - Great Northern Freight Car Number 973004, Saint Paul, Minnesota, 1981