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 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 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 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 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.