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
- 306 more...
- ItemWWAGD-52-351 - Great Northern Diesel Locomotive 509 at Saint Paul, Minnesota, 1968
- ItemWWAGD-52-352 - Great Northern Diesel Locomotive 510 at Saint Paul, Minnesota, 1967
- ItemWWAGD-52-353 - Great Northern Diesel Locomotive 510, undated
- ItemWWAGD-52-354 - Great Northern Diesel Locomotive 510, 1970
- ItemWWAGD-52-355 - Great Northern Diesel Locomotive 510, undated
- ItemWWAGD-52-357 - Great Northern Diesel Locomotive 512 at Duluth, Minnesota, 1967
- ItemWWAGD-52-358 - Great Northern Diesel Locomotive 554 at Saint Paul, Minnesota, 1967
- ItemWWAGD-52-359 - Great Northern Diesel Locomotive 554, undated
- ItemWWAGD-52-362 - Great Northern Diesel Locomotive 560 at Superior, Wisconsin, 1969
- 94 more...