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
- 283 more...
- ItemCNBk1img335 - Great Northern Railway 623 at Bellingham, Washington in 1969.
- ItemCNBk1img336 - Great Northern Railway 624 at Seattle, Washington in 1970.
- ItemCNBk1img337 - Great Northern Railway 625 at Everett, Washington in 1970.
- ItemCNBk1img338 - Great Northern Railway 626 at Burlington, Washington in 1969.
- ItemCNBk1img339 - Great Northern Railway 626
- ItemCNBk1img340 - Great Northern Railway 627 at Minneapolis, Minnesota in 1969.
- ItemCNBk1img341 - Great Northern Railway 629 at Devils Lake, North Dakota in 1969.
- ItemCNBk1img342 - Great Northern Railway 630 at Fargo, North Dakota in 1970.
- ItemCNBk1img343 - Great Northern Railway 630 at Havre, Montana in 1969.
- 520 more...