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 3004 - Maintenance of Way support
- ItemJSBP4639 - Great Northern Railway Historical Society Blueprint Collection JSBP4639, Seattle, Washington, 1949.
- 2 more...