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 3005 - Signals
- ItemJSBP8646 - Great Northern Railway Historical Society Blueprint Collection JSBP8646, Various Places, Minnesota, 1917.
- ItemJSBP8647 - Great Northern Railway Historical Society Blueprint Collection JSBP8647, Various Places, Minnesota, 1917.