Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- ItemJSBP1275 - Great Northern Railway Historical Society Blueprint Collection JSBP1275, Duluth, Minnesota, 1902.
- ItemJSBP1285 - Great Northern Railway Historical Society Blueprint Collection JSBP1285, Duluth, Minnesota, 1923.
- ItemJSBP3301 - Great Northern Railway Historical Society Blueprint Collection JSBP3301, Minneapolis, Minnesota, 1906.
- ItemJSBP3587 - Great Northern Railway Historical Society Blueprint Collection JSBP3587, Minnesota Division, 1899.
- ItemJSBP5677 - Great Northern Railway Historical Society Blueprint Collection JSBP5677, Saint Paul Division, 1905.
- 1 more...