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
- 132 more...
- 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.
- ItemCNBk1img137 - Great Northern Railway 2521
- ItemCNBk1img138 - Great Northern Railway 2505 at Minneapolis Junction, Minnesota in 1969.
- ItemCNBk1img139 - Great Northern Railway 2504 at Wenatchee, Washington in 1969.
- ItemCNBk1img140 - Great Northern Railway 2505
- ItemCNBk1img141 - Great Northern Railway 2510 at Wenatchee, Washington
- 671 more...