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
- 189 more...
- ItemWWAGD-52-204 - Great Northern Diesel Locomotive 323 at Seattle, Washington, 1967
- ItemWWAGD-52-205 - Great Northern Diesel Locomotive 324 at Portland, Oregon, undated
- ItemWWAGD-52-207 - Great Northern Diesel Locomotive 327, undated
- ItemWWAGD-52-208 - Great Northern Diesel Locomotive 327 at Saint Paul, Minnesota, 1967
- ItemWWAGD-52-210 - Great Northern Diesel Locomotive 327 at Seattle, Washington, 1967
- ItemWWAGD-52-211 - Great Northern Diesel Locomotive 327 at Belton, Montana, 1969
- ItemWWAGD-52-212 - Great Northern Diesel Locomotive 328, undated
- ItemWWAGD-52-213 - Great Northern Diesel Locomotive 329 at Havre, Montana, 1968
- ItemWWAGD-52-214 - Great Northern Diesel Locomotive 328, 1967
- 211 more...