Great Northern Railway Historical Society Blueprint Collection JSBP1334, Duluth - Superior, 1929. Great Northern Blueprint Number 211-1560-295, Duluth and Superior Bridge. Renewal Plan of Trestle Over St Louis River. Authorization for Expenditure 36192. 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 JSBP1333, Duluth - Superior, 1929. Great Northern Blueprint Number 211-1560-296, Duluth and Superior Bridge. Plan for Renewal of Bridge Over St Louis River. Authorization for Expenditure 36192. 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 JSBP1332, Duluth - Superior, 1929. Great Northern Blueprint Number 211-1560-295, Duluth and Superior Bridge. Plan of Renewal of Trestle Over St Louis River. Authorization for Expenditure 36192. 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 JSBP1331, Duluth - Superior, 1928. Great Northern Blueprint Number 211-1560-298, Duluth-Superior Bridge. Derail for Street Railway Tracks. Authorization for Expenditure 38190. 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 JSBP1330, Duluth - Superior, 1925. Great Northern Blueprint Number 211-1560-293, Duluth-Superior Bridge. Proposed Timber Trestle. 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 JSBP1329, Duluth - Superior, 1925. Great Northern Blueprint Number 3109-5-1, Order 65090. Street Car Track Frog. 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 JSBP1328, Duluth - Superior, 1920. Great Northern Blueprint Number 211-1560-45, Duluth-Superior Bridge. Typical Section Thru Deck. Authorization for Expenditure 7187. 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 JSBP1327, Duluth - Superior, 1918. Great Northern Blueprint Number LAKE SURVEY CHART #966, Duluth-Superior Bridge Map. Proposed Submarine Cable to Duluth-Superior Bridge. 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 JSBP1326, Duluth - Superior, 1910. Duluth-Superior Bridge. Battery Storage Stringers, 220 Cells. 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 JSBP1325, Duluth - Superior, 1908. Great Northern Blueprint Number 211-1560-51, Duluth-Superior Bridge. General Plan and Typical Details. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.