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 3003 - Maintenance Facilities
- 7 more...
- ItemJSBP4628 - Great Northern Railway Historical Society Blueprint Collection JSBP4628, Seattle, Washington, 1948.
- ItemJSBP4646 - Great Northern Railway Historical Society Blueprint Collection JSBP4646, Seattle, Washington, 1952.
- ItemJSBP4704 - Great Northern Railway Historical Society Blueprint Collection JSBP4704, Seattle, Washington, undated.
- ItemJSBP6173 - Great Northern Railway Historical Society Blueprint Collection JSBP6173, System Wide, 1903.
- ItemJSBP8414 - Great Northern Railway Historical Society Blueprint Collection JSBP8414, System Wide, undated.