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
- 29 more...
- ItemWWAGD-52-010 - Great Northern Diesel Locomotive 24 at Duluth, Minnesota, 1969
- ItemWWAGD-52-011 - Great Northern Diesel Locomotive 24 at Hammond, Indiana, 1969
- ItemWWAGD-52-013 - Great Northern Diesel Locomotive 26 at Hammond, Indiana, 1969
- ItemWWAGD-52-014 - Great Northern Diesel Locomotive 26, undated
- ItemWWAGD-52-016 - Great Northern Diesel Locomotive 77, undated
- ItemWWAGD-52-017 - Great Northern Diesel Locomotive 77 at Seattle, Washington, 1969
- ItemWWAGD-52-018 - Great Northern Diesel Locomotive 77, undated
- ItemWWAGD-52-019 - Great Northern Diesel Locomotive 77 at Seattle, Washington, 1968
- ItemWWAGD-52-020 - Great Northern Diesel Locomotive 80, 1968
- 371 more...