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
- 1031 more...
- Item40.S.97.50 - Great Northern Steam Locomotive 2506, undated
- Item40.S.97.51 - Great Northern Steam Locomotive 2512 at Glacier Park, Montana, undated
- Item40.S.97.52 - Great Northern Steam Locomotive 2514 at Grand Forks, North Dakota, undated
- Item40.S.97.53 - Great Northern Steam Locomotive 2519 at Saint Paul, Minnesota, 1938
- Item40.S.97.54 - Great Northern Steam Locomotive 2522, undated
- Item40.S.97.55 - Great Northern Steam Locomotive 2525, undated
- Item40.S.97.56 - Great Northern Steam Locomotive 2525 at Hillsboro, North Dakota, 1955
- Item40.S.97.57 - Great Northern Steam Locomotive 2527, undated
- Item40.S.97.58 - Great Northern Steam Locomotive 2517, undated
- 35 more...