Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1008 - Ephemera
- ItemJSBP1384 - Great Northern Railway Historical Society Blueprint Collection JSBP1384, Elk River, Minnesota, 1959.
- ItemJSBP8222 - Great Northern Railway Historical Society Blueprint Collection JSBP8222, System Wide, 1954.
- ItemJSBP10395 - Great Northern Railway Historical Society Blueprint Collection JSBP10395, 1949.
- ItemJSBP10396 - Great Northern Railway Historical Society Blueprint Collection JSBP10396, 1949.
- ItemJSBP10397 - Great Northern Railway Historical Society Blueprint Collection JSBP10397, 1949.
- 17 more...