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
- 304 more...
- Itemimg733 - Great Northern Hopper Car 78271 at Skykomish, Washington, 1988
- Itemimg734 - Great Northern Covered Hopper Car 71088 at Bellingham, Washington, 1966
- Itemimg735 - Great Northern Covered Hopper Car 71105 at Bellingham, Washington, 1966
- Itemimg736 - Great Northern Covered Hopper Car 7119_ at Denver, Colorado, 1966
- Itemimg737 - Great Northern Covered Hopper Car 71400 at Albuquerque, New Mexico, 1978
- Itemimg738 - Great Northern Covered Hopper Car 71462 at Amarillo, Texas, 1980
- Itemimg739 - Great Northern Covered Hopper Car 71462 at Amarillo, Texas, 1980
- Itemimg740 - Great Northern Covered Hopper Car 71528 at Bellingham, Washington, 1965
- Itemimg741 - Great Northern Covered Hopper Car 71604, undated
- 206 more...