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
- 1018 more...
- Item40.S.97.37 - Great Northern Steam Locomotive 2525 at Saint Paul, Minnesota, undated
- Item40.S.97.38 - Great Northern Steam Locomotive 2525 at Portland, Oregon, undated
- Item40.S.97.39 - Great Northern Steam Locomotive 2525, undated
- Item40.S.97.40 - Great Northern Steam Locomotive 2525, undated
- Item40.S.97.41 - Great Northern Steam Locomotive 2526 at Saint Paul, Minnesota, 1934
- Item40.S.97.42 - Great Northern Steam Locomotive 2526, undated
- Item40.S.97.43 - Great Northern Steam Locomotive 2502, undated
- Item40.S.97.44 - Great Northern Steam Locomotive, undated
- Item40.S.97.45 - Great Northern Steam Locomotive 2512, undated
- 48 more...