Great Northern Railway Historical Society Blueprint Collection JSBP5830, Superior, Wisconsin, 1930. Extension to 21St Street Viaduct Bridge #5. Location of Bents for The Extension. Authorization for Expenditure 40227. 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 JSBP5829, Superior, Wisconsin, 1930. Great Northern Blueprint Number 205-1200-48, 21St Street Overhead Bridge over Yard. Proposed Extension. Plan, Elevation and Section Views. Authorization for Expenditure 40277. 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 JSBP5828, Superior, Wisconsin, 1929. Great Northern Blueprint Number 205-1200-72, 21St Street Overhead Bridge over the Yard. Bracing for Bents (Steel). Authorization for Expenditure 40227. 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 JSBP5824, Superior, Wisconsin, 1928. Great Northern Blueprint Number 205.330.61, Overhead Bridge. (Belknap 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 JSBP5823, Superior, Wisconsin, 1928. Overhead Bridge. (Belknap 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 JSBP5811, Superior, Wisconsin, 1922. Great Northern Blueprint Number H.5276, Duluth Street Railway Co.. Rails On Main Line of Duluth-Superior Bridge at Connors Point. 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 JSBP5787, Superior, Wisconsin, 1916. Merchandise Dock. Gate Valves - Situation Plat. Authorization for Expenditure 3365. Interstate Commerce Commission Account Number 23, Wharves and docks. Other ICC account descriptions: ICC Account Number 21, Dock.

Great Northern Railway Historical Society Blueprint Collection JSBP5786, Superior, Wisconsin, 1916. Coal Dock. Side and Front Elevation. Authorization for Expenditure 3113. Interstate Commerce Commission Account Number 23, Wharves and docks. Other ICC account descriptions: ICC Account Number 21, Dock.

Great Northern Railway Historical Society Blueprint Collection JSBP5783, Superior, Wisconsin, 1915. Betterments to Draw Span. Driving Pinions at Rack with Necessary Motors and Gear. 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 JSBP5779, Superior, Wisconsin, 1910. Great Northern Blueprint Number 13.B.1200.22, Overhead Bridge. (21st St) Bridge. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridge.