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 3005 - Maintenance of Way cars
- 3 more...
- Itemimg229 - Great Northern Diesel Locomotive Fuel Tank Car X1377 at Denver, Colorado, 1985
- Itemimg230 - Great Northern Diesel Locomotive Fuel Tank Car X1377 at Denver, Colorado, 1985
- Itemimg231 - Great Northern Diesel Locomotive Fuel Tank Car X1381 at Pasco, Washington, 1992
- Itemimg232 - Great Northern Diesel Locomotive Fuel Tank Car X1395 at Portland, Oregon, 1988
- Itemimg233 - Great Northern Snow Plow X1510 at Interbay, Washington, 1973
- Itemimg234 - Great Northern Snow Plow X1510 at Interbay, Washington, 1973
- Itemimg235 - Great Northern Snow Plow X1510 at Interbay, Washington, 1973
- Itemimg236 - Great Northern Crane X1740 at Interbay, Washington, undated
- Itemimg237 - Great Northern Maintenance of Way Flatcar X1910, undated
- 40 more...