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
- 327 more...
- ItemJSBP1334 - Great Northern Railway Historical Society Blueprint Collection JSBP1334, Duluth - Superior, 1929.
- ItemJSBP1335 - Great Northern Railway Historical Society Blueprint Collection JSBP1335, Duluth - Superior, 1930.
- ItemJSBP1336 - Great Northern Railway Historical Society Blueprint Collection JSBP1336, Duluth - Superior, 1933.
- ItemJSBP1337 - Great Northern Railway Historical Society Blueprint Collection JSBP1337, Duluth - Superior, 1933.
- ItemJSBP1338 - Great Northern Railway Historical Society Blueprint Collection JSBP1338, Duluth - Superior, 1934.
- ItemJSBP1339 - Great Northern Railway Historical Society Blueprint Collection JSBP1339, Duluth - Superior, 1935.
- ItemJSBP1340 - Great Northern Railway Historical Society Blueprint Collection JSBP1340, Duluth - Superior, 1935.
- ItemJSBP1341 - Great Northern Railway Historical Society Blueprint Collection JSBP1341, Duluth - Superior, 1935.
- ItemJSBP1342 - Great Northern Railway Historical Society Blueprint Collection JSBP1342, Duluth - Superior, 1937.
- 714 more...