Great Northern Railway Historical Society Blueprint Collection JSBP2712, Hinton, Iowa, undated. Great Northern Blueprint Number 109.06.01, Signal Diagram. Arrangement. Interstate Commerce Commission Account Number 27, Signals and Interlockers. Other ICC account descriptions: ICC Account Number 27, Interlocking.

Great Northern Railway Historical Society Blueprint Collection JSBP3239, Maurice, Iowa, 1907. Proposed Dam. Plan, Sections and Material List. Interstate Commerce Commission Account Number 35, Miscellaneous Structures. Other ICC account descriptions: ICC Account Number 35, Dam.

Great Northern Railway Historical Society Blueprint Collection JSBP4789, Sioux City, Iowa, 1916. Great Northern Blueprint Number 3112.03.01, Crossing Frog. Replace 60 # Frog with 80 # Frog. Authorization for Expenditure 4875. Interstate Commerce Commission Account Number 12, Track Laying and Surfacing. Other ICC account descriptions: ICC Account Number 12, Rail Line.

Great Northern Railway Historical Society Blueprint Collection JSBP4790, Sioux City, Iowa, 1916. Great Northern Blueprint Number 1085.27, Crossing Frog. Diagram of Crossing of Cnw Railway and Union Terminal Railway Co. Authorization for Expenditure 4875. Interstate Commerce Commission Account Number 12, Track Laying and Surfacing. Other ICC account descriptions: ICC Account Number 12, Rail Line.

Great Northern Railway Historical Society Blueprint Collection JSBP9657, Iowa, 1916. Iowa Highway - 8' X4' Box Culvert, Reinforced Concrete. Plan, Elevation and Sections. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Culvert.

Great Northern Technical Drawing 1219-31-7, Crossing Frogs Illinois Central & Union Terminal (Void), 1906. Other subject categories: Drawing

Great Northern Technical Drawing 1219-31-6, Crossing Frogs Illinois Central & Union Terminal (Void), 1906. Other subject categories: Drawing

Great Northern Technical Drawing 1219-31-1, Crossing Frogs Illinois Central & Union Terminal (Superceded), 1906. Other subject categories: Drawing

Great Northern Blueprint Number 1240-34-1, Great Northern Crossing Frogs Illinois Central & Union Terminal, 1906. Other subject categories: Drawing

Great Northern Blueprint Number 1240-34-2, Great Northern Crossing Frogs Illinois Central & Union Terminal, 1906. Other subject categories: Drawing