Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series008 - Union Pacific Railroad
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3007 - Track
- ItemJSBP6721 - Great Northern Railway Historical Society Blueprint Collection JSBP6721, System Wide, 1922.
- ItemJSBP7005 - Great Northern Railway Historical Society Blueprint Collection JSBP7005, System Wide, 1927.