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
- ItemJSBP1244 - Great Northern Railway Historical Society Blueprint Collection JSBP1244, Dilworth, Minnesota, 1946.
- ItemJSBP1284 - Great Northern Railway Historical Society Blueprint Collection JSBP1284, Duluth, Minnesota, 1920.
- ItemJSBP1313 - Great Northern Railway Historical Society Blueprint Collection JSBP1313, Duluth, Minnesota, 1944.
- ItemJSBP1314 - Great Northern Railway Historical Society Blueprint Collection JSBP1314, Duluth, Minnesota, 1944.
- ItemJSBP2136 - Great Northern Railway Historical Society Blueprint Collection JSBP2136, Guilds Lake, Oregon, 1946.
- ItemJSBP4539 - Great Northern Railway Historical Society Blueprint Collection JSBP4539, Seattle, Washington, 1942.
- 6 more...