Railroad Archives Online
- CollectionE0298 - Cordell Newby Photograph Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3005 - Work cars (Railroads)
- 3 more...
- ItemCNBk2img269 - Great Northern Railway Snow Plow X1507 at Havre, Montana
- ItemCNBk2img270 - Great Northern Railway Snow Plow X1507
- ItemCNBk2img271 - Great Northern Railway Snow Plow X1507
- ItemCNBk2img272 - Great Northern Railway Snow Plow X1626 at Wenatchee, Washington
- ItemCNBk2img273 - Great Northern Railway Snow Plow X1709 in 1973.
- ItemCNBk2img274 - Great Northern Railway Snow Plow X1707
- ItemCNBk2img275 - Great Northern Railway Snow Plow X1711 at Whitefish, Montana in 1972.
- ItemCNBk2img276 - Great Northern Railway Snow Plow X1710 at Great Falls, Montana in 1971.
- ItemCNBk2img277 - Great Northern Railway Snow Plow X1510
- 264 more...