Great Northern Railway Historical Society Blueprint Collection JSBP2131, Grotto, Washington, 1915. 6' X6' Reinforced Concrete Culvert. Plan, Elevation and Sections With Dimensions and Instructions. Authorization for Expenditure 25613. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Culvert.

Great Northern Railway Historical Society Blueprint Collection JSBP2166, Hardy, Montana, 1918. Montana Central Railway Blueprint, Tunnel # 1. Proposed Change of Grade. Authorization for Expenditure 8659. Interstate Commerce Commission Account Number 5, Tunnels and Subways. Other ICC account descriptions: ICC Account Number 5, Tunnel.

Great Northern Railway Historical Society Blueprint Collection JSBP2167, Hardy, Montana, 1918. Montana Central Railway Blueprint Number 133.K.65, Standard Sections for Tunnels. Solid Rock Sections, Timbered Sections. Authorization for Expenditure 8659. Interstate Commerce Commission Account Number 5, Tunnels and Subways. Other ICC account descriptions: ICC Account Number 5, Tunnel.

Great Northern Railway Historical Society Blueprint Collection JSBP2184, Harrington, Washington, 1919. Concrete 6 X 6 Double Culvert. Line Profile. Authorization for Expenditure 10412. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Culvert.

Great Northern Railway Historical Society Blueprint Collection JSBP2185, Harrington, Washington, 1919. Great Northern Blueprint Number 14.330, Steam Shovel Work. List of Work Performed. Authorization for Expenditure 10412. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Culvert.

Great Northern Railway Historical Society Blueprint Collection JSBP2473, Helena, Montana, undated. Great Northern Blueprint Number 103.19.01, Crossing with Np Ry. Signaling Diagram. 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 JSBP2476, Hendrum, Minnesota, undated. Great Northern Blueprint Number S.P.75.06.40.01, Crossing Warning Signal. Plan. Interstate Commerce Commission Account Number 15, Crossings and Signs. Other ICC account descriptions: ICC Account Number 14, Public Crossing.

Great Northern Railway Historical Society Blueprint Collection JSBP2477, Hereford, Minnesota, 1916. Earth Dams at Gravel Pit. Pit Layout. Authorization for Expenditure 3364. Interstate Commerce Commission Account Number 3, Grading.

Great Northern Railway Historical Society Blueprint Collection JSBP2484, Hibbing, Minnesota, 1908. Great Northern Blueprint Number 1121-14, Diagram of Double Cross-Over. North Cypress Mine Spur. Interstate Commerce Commission Account Number 9, Rails. Other ICC account descriptions: ICC Account Number 9, Rail.

Great Northern Railway Historical Society Blueprint Collection JSBP2485, Hibbing, Minnesota, 1909. Great Northern Blueprint Number 1121-14, North Cypress Mine Spur Crossing. Plan Detail. Interstate Commerce Commission Account Number 9, Rails. Other ICC account descriptions: ICC Account Number 9, Crossing Frog.