Great Northern Railway Historical Society Blueprint Collection JSBP2461, Helena, Montana, 1913. Great Northern Blueprint Number 7561-22, Passenger Station. Electric Lighting Plan and Details. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Depot.

Great Northern Railway Historical Society Blueprint Collection JSBP2460, Helena, Montana, 1912. Passenger Station. Sections. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Station Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP2459, Helena, Montana, 1912. Great Northern Blueprint Number 7561-7, Passenger Station. Sections. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Depot.

Great Northern Railway Historical Society Blueprint Collection JSBP2458, Helena, Montana, 1912. Great Northern Blueprint Number 7561-5, Passenger Station. Front and Side Elevations. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Depot.

Great Northern Railway Historical Society Blueprint Collection JSBP2457, Helena, Montana, 1912. Great Northern Blueprint Number 7561-4, Passenger Station. Main Floor and Roof Plan. Authorization for Expenditure 80941. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Depot.

Great Northern Railway Historical Society Blueprint Collection JSBP2456, Helena, Montana, 1912. Great Northern Blueprint Number 7561-3, Passenger Station. Track Floor Plan and Stair Details. Authorization for Expenditure 80941. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Depot.

Great Northern Railway Historical Society Blueprint Collection JSBP2455, Helena, Montana, 1902. Stockyard. Three Pen - Floor Plan. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Stockyard.

Great Northern Railway Historical Society Blueprint Collection JSBP2453, Havre, Montana, undated. Diesel Repair Shop. List of Costs. Authorization for Expenditure 68350. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2452, Havre, Montana, undated. Preliminary Field Report - Diesel Shop and Storehouse. Site Plan. Authorization for Expenditure 68350. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Engine House.

Great Northern Railway Historical Society Blueprint Collection JSBP2451, Havre, Montana, undated. Blacksmith and Boiler Shop. Proposed Steam Heating. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Shop Facilities.