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
- 136 more...
- 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
- ItemCNBk1img142 - Great Northern Railway 2509 at Spokane, Washington in 1969.
- ItemCNBk1img143 - Great Northern Railway 2507 at Whitefish, Montana in 1968.
- ItemCNBk1img144 - Great Northern Railway 2506
- ItemCNBk1img145 - Great Northern Railway 2511 at Havre, Montana in 1968.
- 667 more...