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
- 322 more...
- Itemimg751 - Great Northern Covered Hopper Car 170074 at Albuquerque, New Mexico, 1990
- Itemimg752 - Great Northern Covered Hopper Car 170092 at Longmont, Colorado, 1980
- Itemimg753 - Great Northern Covered Hopper Car 170125 at Pasco, Washington, 1983
- Itemimg754 - Great Northern Covered Hopper Car 170131 at Longmont, Colorado, 1980
- Itemimg755 - Great Northern Covered Hopper Car 170173 at Pasco, Washington, 1981
- Itemimg756 - Great Northern Covered Hopper Car 170171 at Pasco, Washington, 1986
- Itemimg757 - Great Northern Covered Hopper Car 170214 at Broomfield, Colorado, 1990
- Itemimg758 - Great Northern Covered Hopper Car 170222 at Pasco, Washington, 1981
- Itemimg759 - Great Northern Covered Hopper Car 170243 at McCook, Nebraska, 1990
- 188 more...