Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 320 more...
- ItemJSBP1326 - Great Northern Railway Historical Society Blueprint Collection JSBP1326, Duluth - Superior, 1910.
- ItemJSBP1328 - Great Northern Railway Historical Society Blueprint Collection JSBP1328, Duluth - Superior, 1920.
- ItemJSBP1329 - Great Northern Railway Historical Society Blueprint Collection JSBP1329, Duluth - Superior, 1925.
- ItemJSBP1330 - Great Northern Railway Historical Society Blueprint Collection JSBP1330, Duluth - Superior, 1925.
- ItemJSBP1331 - Great Northern Railway Historical Society Blueprint Collection JSBP1331, Duluth - Superior, 1928.
- ItemJSBP1332 - Great Northern Railway Historical Society Blueprint Collection JSBP1332, Duluth - Superior, 1929.
- ItemJSBP1333 - Great Northern Railway Historical Society Blueprint Collection JSBP1333, Duluth - Superior, 1929.
- ItemJSBP1334 - Great Northern Railway Historical Society Blueprint Collection JSBP1334, Duluth - Superior, 1929.
- ItemJSBP1335 - Great Northern Railway Historical Society Blueprint Collection JSBP1335, Duluth - Superior, 1930.
- 721 more...