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 3002 - Diesel Locomotives
- 127 more...
- ItemCNBk1img128 - Great Northern Railway 2501 at Clyde Yard, Cicero, Illinois
- ItemCNBk1img129 - Great Northern Railway 2502 at Minneapolis, Minnesota in 1968.
- ItemCNBk1img130 - Great Northern Railway 2503 at Havre, Montana in 1969.
- ItemCNBk1img131 - Great Northern Railway 2503 at Lincoln, Nebraska in 1070.
- ItemCNBk1img132 - Great Northern Railway 2520 at Marias Pass, Montana in 1968.
- ItemCNBk1img133 - Great Northern Railway 2503
- ItemCNBk1img134 - Great Northern Railway 2503 at Wenatchee, Washington
- ItemCNBk1img135 - Great Northern Railway 2504
- ItemCNBk1img136 - Great Northern Railway 2504 at Minneapolis Junction, Minnesota in 1969.
- 676 more...