Great Northern Blueprint Number 1234-4, map of Langdon Reservoir and Pipeline Easement Plan and Profile, 1906. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1215-17-1, map of Langdon Northwest Line, 1897. Other subject categories: Right of Way and Track Map

Great Northern Railway Historical Society Blueprint Collection JSBP3070, Langdon, North Dakota, 1902. Passenger and Freight Depot. Floor Plan. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Station Facilities.

Great Northern Railway Authorization for Expenditure (AFE), Langdon, North Dakota, undated. Coal Platform . Interstate Commerce Commission Account Number 19, Fueling Stations. Series Original.

Great Northern Railway Authorization for Expenditure (AFE), Langdon, North Dakota, undated. Hand Car House . Interstate Commerce Commission Account Number 17, Roadway buildings. Series Original.

Great Northern Railway Authorization for Expenditure (AFE), Langdon, North Dakota, 1888. Engine House, Relocated From Park River. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Series Original.

Great Northern Railway Authorization for Expenditure (AFE), Langdon, North Dakota, 1888. Water Tank, 50,000 Gallon Tank. Interstate Commerce Commission Account Number 18, Water Stations. Series Original.

Great Northern Railway Authorization for Expenditure (AFE), Langdon, North Dakota, 1887. Depot . Interstate Commerce Commission Account Number 16, Station and Office Buildings. Series Original.

AFE 937, Langdon, North Dakota, 1893. Erect 2010' of Fence. Interstate Commerce Commission Account Number 13, Fences, Snowsheds and Signs. Cost: $59. Series GM. Lines East. Other Subject Categories: Fences, Right of Way

AFE 932, Langdon, North Dakota, 1893. Construct Standard Platform 12 X 32. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Cost: $40. Series GM. Lines East. Other Subject Categories: Station Facilities, Platforms