Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1012 - Cartographic materials
- Subseries Level 2002 - Plats
- 55 more...
- ItemJSBP2172 - Great Northern Railway Historical Society Blueprint Collection JSBP2172, Harlem, Montana, 1918.
- ItemJSBP2176 - Great Northern Railway Historical Society Blueprint Collection JSBP2176, Harlem, Montana, 1927.
- ItemJSBP2220 - Great Northern Railway Historical Society Blueprint Collection JSBP2220, Havre, Montana, 1919.
- ItemJSBP2222 - Great Northern Railway Historical Society Blueprint Collection JSBP2222, Havre, Montana, 1920.
- ItemJSBP2352 - Great Northern Railway Historical Society Blueprint Collection JSBP2352, Havre, Montana, 1950.
- ItemJSBP2371 - Great Northern Railway Historical Society Blueprint Collection JSBP2371, Havre, Montana, 1953.
- ItemJSBP2372 - Great Northern Railway Historical Society Blueprint Collection JSBP2372, Havre, Montana, 1954.
- ItemJSBP2374 - Great Northern Railway Historical Society Blueprint Collection JSBP2374, Havre, Montana, 1957.
- ItemJSBP2385 - Great Northern Railway Historical Society Blueprint Collection JSBP2385, Havre, Montana, 1965.
- 145 more...