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
- 163 more...
- ItemWWAGD-52-171 - Great Northern Diesel Locomotive 309C, undated
- ItemWWAGD-52-175 - Great Northern Diesel Locomotive 311A at Minneapolis, Minnesota, 1970
- ItemWWAGD-52-176 - Great Northern Diesel Locomotive 311A at Superior, Wisconsin, 1969
- ItemWWAGD-52-177 - Great Northern Diesel Locomotive 312C, undated
- ItemWWAGD-52-179 - Great Northern Diesel Locomotive 313A, undated
- ItemWWAGD-52-182 - Great Northern Diesel Locomotive 313A, undated
- ItemWWAGD-52-183 - Great Northern Diesel Locomotive 314A at Superior, Wisconsin, 1965
- ItemWWAGD-52-184 - Great Northern Diesel Locomotive 314C at Superior, Wisconsin, 1969
- ItemWWAGD-52-185 - Great Northern Diesel Locomotive 315C, undated
- 237 more...