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
- 32 more...
- 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
- ItemWWAGD-52-021 - Great Northern Diesel Locomotive 82 at Livingston, Montana, 1970
- ItemWWAGD-52-022 - Great Northern Diesel Locomotive 83, undated
- ItemWWAGD-52-023 - Great Northern Diesel Locomotive 186, undated
- 376 more...