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
- 311 more...
- Itemimg740 - Great Northern Covered Hopper Car 71528 at Bellingham, Washington, 1965
- Itemimg741 - Great Northern Covered Hopper Car 71604, undated
- Itemimg742 - Great Northern Covered Hopper Car 71676 at Denver, Colorado, 1976
- Itemimg743 - Great Northern Covered Hopper Car 71708 at Pasco, Washington, 1981
- Itemimg744 - Great Northern Covered Hopper Car 71731, undated
- Itemimg745 - Great Northern Covered Hopper Car 71806, undated
- Itemimg746 - Great Northern Covered Hopper Car 71856, undated
- Itemimg747 - Great Northern Covered Hopper Car 71995 at Bellingham, Washington, 1992
- Itemimg748 - Great Northern Covered Hopper Car 170019 at Albuquerque, New Mexico, 1985
- 199 more...