Railroad Archives Online
- CollectionE0018 - Norm Keyes Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam Locomotives
- 1066 more...
- Item40.S.99.26 - Great Northern Steam Locomotive 2106, undated
- Item40.S.99.27 - Great Northern Steam Locomotive 2129 at Portland, Oregon, 1949
- Item40.S.99.28 - Great Northern Steam Locomotive 2106, undated
- Item40.S.99.29 - Great Northern Steam Locomotive 2108, undated
- Item40.S.99.30 - Great Northern Steam Locomotive 2129 at Hillyard, Washington, 1935
- Item40.S.99.31 - Great Northern Steam Locomotive 2125 at Superior, Wisconsin, 1955
- Item40.S.99.32 - Great Northern Steam Locomotive 2100, undated
- Item40.S.99.33 - Great Northern Steam Locomotive, undated
- Item40.S.99.34 - Great Northern Steam Locomotive 2113 at Superior, Wisconsin, 1954