Great Northern Blueprint Number 1259-15-12, map of Reservoir at Chelsea, undated. Other subject categories: Map

Great Northern Blueprint Number 1175-2-2, map of Chelsea (abandoned 1898), 1895. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1175-2-1, map of Chelsea (abandoned 1898), 1895. Other subject categories: Right of Way and Track Map

Great Northern Railway Historical Society Blueprint Collection JSBP0896, Chelsea, Montana, undated. Proposed Private Crossing. Map. Interstate Commerce Commission Account Number 15, Crossings and Signs. Other ICC account descriptions: ICC Account Number 14, Private Crossing.

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

Great Northern Railway Authorization for Expenditure (AFE), Chelsea, Montana, undated. Coal Shed, (2 Miles East) -. Interstate Commerce Commission Account Number 19, Fueling Stations. Series Original.

Great Northern Railway Authorization for Expenditure (AFE), Chelsea, Montana, 1887. Section House . Interstate Commerce Commission Account Number 17, Roadway buildings. Series Original.

Great Northern Railway Authorization for Expenditure (AFE), Chelsea, Montana, 1887. Water Tank, (2 Miles West) - 50,000 Gallon Tank, with Windmill. Interstate Commerce Commission Account Number 18, Water Stations. Series Original.