Great Northern Railway Historical Society Blueprint Collection JSBP1353, Duluth - Superior, 1944. Great Northern Blueprint Number 211-1560-328, Duluth-Superior Bridge. Repairs to Timber Trestle, Duluth Railway Approach. Authorization for Expenditure 64917. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1352, Duluth - Superior, 1944. Great Northern Blueprint Number 211-1560-325, Duluth - Superior Bridge. Renewal of Fenders for Piers. Authorization for Expenditure 64917. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1351, Duluth - Superior, 1943. Great Northern Blueprint Number 211-1560-329, Duluth-Superior Bridge. Removal of Part of Trestle Superior Railway Approach. Authorization for Expenditure 67568. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1350, Duluth - Superior, 1942. Great Northern Blueprint Number 211-1560, Duluth-Superior Bridge. Toll Collector's House Plan "C". Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1349, Duluth - Superior, 1942. Great Northern Blueprint Number 211-1560-325, Duluth - Superior Bridge. Renewal of Fenders for Piers. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1348, Duluth - Superior, 1941. Great Northern Blueprint Number 211-1560-323, Duluth-Supeior Bridge. Renewal of Fender for Center Pier. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1347, Duluth - Superior, 1939. Great Northern Blueprint Number 211-1560-282, Duluth-Superior Bridge. Field Repor, Plan and Elevation. Authorization for Expenditure 53331. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1346, Duluth - Superior, 1939. Great Northern Blueprint Number 211-1560-314, Duluth-Superior Bridge. Roadway Deck Renewal. Authorization for Expenditure 53331. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1345, Duluth - Superior, 1938. Great Northern Blueprint Number 211-1560-315, Duluth-Superior Bridge. Roadway Deck Renewal. Authorization for Expenditure 53331. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.

Great Northern Railway Historical Society Blueprint Collection JSBP1344, Duluth - Superior, 1938. Duluth-Superior Bridge. Highway Approach, General Plan and Typical Details. Authorization for Expenditure 53331. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.