Railroad Archives Online
- CollectionD0036 - George Werkema Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3002 - Diesel Locomotives
- 31 more...
- Itemimg135 - Great Northern Diesel Locomotive 206 at Minneapolis, Minnesota, 1968
- Itemimg136 - Great Northern Diesel Locomotive 222 at Interbay, Washington, 1963
- Itemimg137 - Great Northern Diesel Locomotive 230 at Vancouver, Washington, 1965
- Itemimg138 - Great Northern Diesel Locomotive 257A at Ft. Worth, Texas, 1964
- Itemimg139 - Great Northern Diesel Locomotive 262B at Vancouver, British Columbia, 1964
- Itemimg14 - Great Northern Diesel Locomotive 182, undated
- Itemimg140 - Great Northern Diesel Locomotive 264A at Minneapolis, Minnesota, 1968
- Itemimg141 - Great Northern Diesel Locomotive 273B at White Rock, British Columbia, 1961
- Itemimg142 - Great Northern Diesel Locomotive 276B at Vancouver, British Columbia, 1963
- 188 more...