Railroad Archives Online
- ArkivD0036 - George Werkema Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Underserie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 004 - Railroad Passenger Cars
- Objektimg1216 - Great Northern Heater Car 19 at Wickersham, Washington, 2008
- Objektimg277 - Great Northern Passenger Car at Cashmere, Washington, 1987
- Objektimg278 - Great Northern Passenger Car at Cashmere, Washington, 1987
- Objektimg279 - Great Northern Passenger Car at Cashmere, Washington, 1987
- Objektimg280 - Great Northern Passenger Car at Cashmere, Washington, 1987
- 38 mer...