Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3005 - Signals
- 70 more...
- ItemJSBP9555 - Great Northern Railway Historical Society Blueprint Collection JSBP9555, 1905.
- ItemJSBP9709 - Great Northern Railway Historical Society Blueprint Collection JSBP9709, Wisconsin, 1918.
- ItemJSBP10476 - Great Northern Railway Historical Society Blueprint Collection JSBP10476, Minnesota, 1952.
- ItemJSBP10513 - Great Northern Railway Historical Society Blueprint Collection JSBP10513, 1956.
- ItemJSBP10526 - Great Northern Railway Historical Society Blueprint Collection JSBP10526, 1960.
- ItemJSBP10659 - Great Northern Railway Historical Society Blueprint Collection JSBP10659, undated.