Great Northern Railway Historical Society Blueprint Collection JSBP1280, Duluth, Minnesota, 1908. Profile of West End of Duluth Terminal Trestle. Showing Change of Grade of Northern Pacific track at Duluth Terminal Trestle. Interstate Commerce Commission Account Number 3, Grading. Other ICC account descriptions: ICC Account Number 3, Change In Grade.

Great Northern Railway Historical Society Blueprint Collection JSBP1312, Duluth, Minnesota, 1944. Great Northern Blueprint Number 223-10410138, Profile of Proposed Northern Pacific Connection. Alternate "A". Authorization for Expenditure 68088. 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 JSBP1321, Duluth, Minnesota, undated. Great Northern Blueprint Number 235-3, Mcdougall Ter Building. Map of Tracks 2 and 3 and Ramp. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Warehouse.

Great Northern Blueprint Number 1220-8-3, Track Profile, Duluth, Minnesota, Duluth Terminal Railway and Duluth Superior Bridge, 1909. Other subject categories: Profile