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 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.

Great Northern Railway Historical Society Blueprint Collection JSBP1323, Duluth - Superior, 1906. Superior Avenue Bridge. Plan for Changing Bents In Approach to Superior Avenue 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 JSBP1317, Duluth, Minnesota, 1957. Great Northern Blueprint Number 211.1560.346, Duluth-Superior Bridge. Fender for Center Pier - Renewal of East Nose Crib. Authorization for Expenditure 88095. 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 JSBP1316, Duluth, Minnesota, 1948. Timber Sidewalk. Details - 9th Avenue W and Michigan Street. 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 JSBP1311, Duluth, Minnesota, 1939. Great Northern Blueprint Number 211-1560-51, Approach to Inter-State Bridge. 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.