Great Northern Railway Historical Society Blueprint Collection JSBP4184, Portage, Montana, 1939. Great Northern Blueprint Number 172-1450-41, Bridge 737. Field Report 9/30/1940. Authorization for Expenditure 56516. Interstate Commerce Commission Account Number 6, Bridges, Trestles, and Culverts. Other ICC account descriptions: ICC Account Number 6, Bridges and Trestles.

Great Northern Railway Historical Society Blueprint Collection JSBP4182, Poplar, Montana, undated. Bridge No276. Plan and Elevation. 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 JSBP4181, Poplar, Montana, 1953. Great Northern Blueprint Number 7926-1, Remodel Depot. Plan, Elevation and Section. Authorization for Expenditure 83791. 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 JSBP4180, Poplar, Montana, 1951. Great Northern Blueprint Number 9419-1, Standard 16' X 61'4'' Steel Signal Maintainer's and Motor House. Floor Plan, Elevations, Sections and Details. Authorization for Expenditure 83887. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Yard Building.

Great Northern Railway Historical Society Blueprint Collection JSBP4179, Poplar, Montana, 1916. Passenger Depot. Layout of Lighting. 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 JSBP4178, Poplar, Montana, 1915. Great Northern Blueprint Number 56-2794 Sheet 1, Bridge Number 274. General Plan. Authorization for Expenditure 25561. 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 JSBP4177, Poplar, Montana, 1897. Standard Plan 30' X 48' Depot. Floor Plan, Elevations, Sections and Details. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Station.

Great Northern Railway Historical Society Blueprint Collection JSBP4134, Paola, Montana, 1904. Great Northern Blueprint Number Sheet #1, Proposed Protection Shed. Section. Interstate Commerce Commission Account Number 14, Snow and Sand Fences and Snowsheds. Other ICC account descriptions: ICC Account Number 13, Snow Shed.

Great Northern Railway Historical Society Blueprint Collection JSBP4133, Paola, Montana, 1904. Great Northern Blueprint Number Sheet #2, Proposed Protection Shed. Sections. Interstate Commerce Commission Account Number 14, Snow and Sand Fences and Snowsheds. Other ICC account descriptions: ICC Account Number 13, Snow Shed.

Great Northern Railway Historical Society Blueprint Collection JSBP4132, Paola, Montana, 1904. Great Northern Blueprint Number E.406.01, Snowshed. Proposed Protection Shed at Tunnel # 2. Interstate Commerce Commission Account Number 14, Snow and Sand Fences and Snowsheds. Other ICC account descriptions: ICC Account Number 13, Snow Shed.