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)
- 271 more...
- ItemCNBk4img011 - Great Northern Railway Outfit Car X5701 at Laurel, Montana in 1973.
- ItemCNBk4img012 - Great Northern Railway Outfit Car X7903 at Malaga, Washington in 1972.
- ItemCNBk4img013 - Great Northern Railway Outfit Car X4053 at Essex, Montana in 1977.
- ItemCNBk4img014 - Great Northern Railway Outfit Car X3625 at Wenatchee, Washington.
- ItemCNBk4img015 - Great Northern Railway Flat Car X3815.