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)
- 261 more...
- ItemCNBk4img001 - Great Northern Railway Outfit Car X4004.
- ItemCNBk4img002 - Great Northern Railway Outfit Car X4005 at Libby, Montana in 1977.
- ItemCNBk4img003 - Great Northern Railway Outfit Car X4066 at Wenatchee, Washington in 1973.
- ItemCNBk4img004 - Great Northern Railway Outfit Car X4083 at Superior, Wisconsin in 1973.
- ItemCNBk4img005 - Great Northern Railway Outfit Car X4367.
- ItemCNBk4img006 - Great Northern Railway Outfit Car X4410 at Whitefish, Montana in 1977.
- ItemCNBk4img007 - Great Northern Railway Outfit Car X4410 at Whitefish, Montana in 1977.
- ItemCNBk4img008 - Great Northern Railway Outfit Car X4418 at Minot, North Dakota in 1973.
- ItemCNBk4img009 - Great Northern Railway Outfit Car X4705 at Wenatchee, Washington in 1977.
- 6 more...