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 3001 - Steam Locomotives
- Itemimg180 - Great Northern Steam Locomotive 1147 at Wenatchee, Washington, 1987
- Itemimg181 - Great Northern Steam Locomotive 1147 at Wenatchee, Washington, 1987
- Itemimg182 - Great Northern Steam Locomotive 1147 at Wenatchee, Washington, 1987
- Itemimg183 - Great Northern Steam Locomotive 1147 at Wenatchee, Washington, 1987
- Itemimg184 - Great Northern Steam Locomotive 1147 at Wenatchee, Washington, 1988
- 6 more...