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 Blueprint Number 1252-34-1, map of Poplar North Route, Poplar to International Boundray, 1909. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1621-22, map of Poplar North Line Mile 21 to 42, 1913. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1621-21, map of Poplar North Line Mile 0 to 21, 1913. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1621-23, map of Poplar - Cottonwood Line Mile 0 to 17, 1913. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1621-24, map of Poplar - Cottonwood Line Mile 17 to 33, 1913. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1621-17-1, map of Poplar North West Line, 1919. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1252-1-3, map of Land Required for Station Grounds at Poplar, undated. Other subject categories: Right of Way and Track Map