Great Northern Railway Historical Society Blueprint Collection JSBP9225, Willmar, Minnesota, 1921. Great Northern Blueprint Number 8450-9, Koyl System - Water Treating Plant. Water Wheel and Other Details. Interstate Commerce Commission Account Number 18, Water Stations. Other ICC account descriptions: ICC Account Number 18, Water Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP9220, Willmar, Minnesota, 1918. Great Northern Blueprint Number 8004-2, 10 Stall Addition to Roundhouse. Floor Plan, Elevation,Sections. 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 JSBP9219, Willmar, Minnesota, 1918. Great Northern Blueprint Number 8004-2, 10 Stall Addition to Round House. General Plan. 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 JSBP9217, Willmar, Minnesota, 1918. Proposed 9' X 32' Oil Heater House. Floor Plan and Section. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Shop Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP9216, Willmar, Minnesota, 1918. Great Northern Blueprint Number 8312.01, Power House. Boiler and Machine Settings. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Shop Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP9214, Willmar, Minnesota, 1916. Great Northern Blueprint Number 8317-7, Storehouse. Site Plan, Floor Plans and Detail. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Store House.

Great Northern Railway Historical Society Blueprint Collection JSBP9209, Willmar, Minnesota, 1908. Great Northern Blueprint Number 1331-27, Hot Water Reservoir - 100,000 Gals.. Plan and Sections. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Shop Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP9208, Willmar, Minnesota, 1907. Great Northern Blueprint Number 1339-4 Sheet 2, Power House, Boiler and Machine Settings. Floor Plan and Sections. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Shop Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP9206, Willmar, Minnesota, 1905. Great Northern Blueprint Number 1116-26, 80' Through Turntable - Standard Pit. Plan, Elevations and Details. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Shop Facilities.

Great Northern Railway Historical Society Blueprint Collection JSBP9197, Willmar, Minnesota, 1900. Great Northern Blueprint Number 1058-10 Sheet 1, 26 Stall Engine House. Floor Plan. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Other ICC account descriptions: ICC Account Number 20, Roundhouse.