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
- 111 more...
- Item40.S.103.20 - Great Northern Steam Locomotive 2552, undated
- Item40.S.103.21 - Great Northern Steam Locomotive 2551 at Hillyard, Washington, 1935
- Item40.S.103.22 - Great Northern Steam Locomotive 2551 at Saint Paul, Minnesota, 1929
- Item40.S.104.01 - Great Northern Steam Locomotive 2575, undated
- Item40.S.104.02 - Great Northern Steam Locomotive 2575, undated
- Item40.S.104.03 - Great Northern Steam Locomotive 2575, undated
- Item40.S.104.04 - Great Northern Steam Locomotive 2575 at Spokane, Washington, 1938
- Item40.S.104.05 - Great Northern Steam Locomotive 2576 at Hillyard, Washington, 1935
- Item40.S.104.06 - Great Northern Steam Locomotive 2576, undated
- 955 more...