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
- 137 more...
- ItemWWAGD-52-140 - Great Northern Diesel Locomotive 271B, 1970
- ItemWWAGD-52-141 - Great Northern Diesel Locomotive 271A, 1970
- ItemWWAGD-52-142 - Great Northern Diesel Locomotive 273B at White Rock, British Columbia, undated
- ItemWWAGD-52-143 - Great Northern Diesel Locomotive 274A, 1968
- ItemWWAGD-52-144 - Great Northern Diesel Locomotive 276A at Vancouver, British Columbia, 1961
- ItemWWAGD-52-145 - Great Northern Diesel Locomotive 276A, undated
- ItemWWAGD-52-146 - Great Northern Diesel Locomotive 276A at Seattle, Washington, 1967
- ItemWWAGD-52-147 - Great Northern Diesel Locomotive 276B, undated
- ItemWWAGD-52-148 - Great Northern Diesel Locomotive 277A at Vancouver, British Columbia, 1965
- 271 more...