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
- 402 more...
- Itemimg831 - Great Northern Covered Hopper Car 172139 at Ferndale, Washington, 1992
- Itemimg832 - Great Northern Covered Hopper Car 172209 at Pasco, Washington, 1983
- Itemimg833 - Great Northern Covered Hopper Car 172210 at Amarillo, Texas, 1980
- Itemimg834 - Great Northern Covered Hopper Car 172210 at Amarillo, Texas, 1980
- Itemimg835 - Great Northern Covered Hopper Car 172252 at Holbrook, Nebraska, 1990
- Itemimg836 - Great Northern Covered Hopper Car 172294 at Amarillo, Texas, 1980
- Itemimg837 - Great Northern Covered Hopper Car 172320 at Albuquerque, New Mexico, 1979
- Itemimg838 - Great Northern Covered Hopper Car 172368 at Wishram, Washington, 1988
- Itemimg839 - Great Northern Covered Hopper Car 172372 at Amarillo, Texas, 1980
- 108 more...