Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 353 more...
- ItemWWAGD-52-405 - Great Northern Diesel Locomotive 680 at Superior, Wisconsin, 1955
- ItemWWAGD-52-406 - Great Northern Diesel Locomotive 680, undated
- ItemWWAGD-52-407 - Great Northern Diesel Locomotive 680 at Superior, Wisconsin, 1969
- ItemWWAGD-52-408 - Great Northern Diesel Locomotive 682, 1963
- ItemWWAGD-52-409 - Great Northern Diesel Locomotive 692 at Wenatchee, Washington, undated
- ItemWWAGD-52-411 - Great Northern Diesel Locomotive 657, undated
- ItemWWAGD-52-412 - Great Northern Diesel Locomotive 698 at Tacoma, Washington, 1967
- ItemWWAGD-52-413 - Great Northern Diesel Locomotive 705, undated
- ItemWWAGD-52-415 - Great Northern Diesel Locomotive 707, undated
- 47 more...