Great Northern Blueprint Number 1240-34-22, map of Montana Central, Helena, Boulder Valley & Butte Railroad, 1894. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1240-34-21, map of Montana Central Crossing of Boulder Valley & Butte Railway, 1891. Other subject categories: Right of Way and Track Map

Great Northern Blueprint Number 1191-8, map of Boulder to Calvins Station 2060 to 2600, 1887. Other subject categories: Right of Way and Track Map

Great Northern Railway Historical Society Blueprint Collection JSBP0563, Boulder, Montana, 1960. Great Northern Blueprint Number 6774.01.01, Stock Scale. Wiring Plan. Authorization for Expenditure 60. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Stockyard.

Great Northern Railway Historical Society Blueprint Collection JSBP0562, Boulder, Montana, 1927. Lighting Plan. Floor Plan. Authorization for Expenditure 32795. 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 JSBP0561, Boulder, Montana, 1917. Passenger and Freight Depot. Floor Plan. Authorization for Expenditure 4968. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Other ICC account descriptions: ICC Account Number 16, Station Facilities.

AFE 7504, Boulder, Montana, 1917. Replace Old Style Wooden Mail Crane with New Barker Steel Crane. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Cost: $25. Series II. Lines West. Spokane Division. Other Subject Categories: Passenger Facilities, Mail Crane

AFE 7502, Boulder, Montana, 1918. Furnish Two Hot Blast Stoves for Depot. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Cost: $59. Series II. Lines West. Butte Division. Other Subject Categories: Station Facilities

AFE 5844, Boulder, Montana, 1902. at Gravel Pit. Interstate Commerce Commission Account Number 12, Track Laying and Surfacing. Series I. Lines West. Other Subject Categories: Track, Industry

AFE 5623, Boulder, Montana, 1902. Interstate Commerce Commission Account Number 14, Crossings. Series I. Lines West. Other Subject Categories: Crossings, Public

AFE 494, Boulder, Montana, 1898. Place 8 X 12 Hand Car House. Interstate Commerce Commission Account Number 17, Roadway buildings. Cost: $27. Series I. Lines West. Butte Division. Other Subject Categories: Roadway Buildings, Section Facilities

AFE 4842, Boulder, Montana, 1901. Install Gravity Water Supply at Section House. Interstate Commerce Commission Account Number 17, Roadway buildings. Cost: $257. Series I. Lines West. Butte Division. Other Subject Categories: Roadway Buildings, Section Facilities

AFE 4838, Boulder, Montana, 1901. Construct Standard Plan 16 X 32 Section House, with Kitchen 13.5 X 16. Interstate Commerce Commission Account Number 17, Roadway buildings. Cost: $893. Series I. Lines West. Butte Division. Other Subject Categories: Roadway Buildings, Section Facilities

AFE 3834, Boulder, Montana, 1916. Construct Two Section Houses, Each 22' X 24', A 4' X 6' Privy, and Move One Hand Car House to New Location. Interstate Commerce Commission Account Number 17 Roadway buildings Cost: $1246. Series II. Lines West. Butte Division. Other Subject Categories: Roadway Buildings, Section Facilities

AFE 3713, Boulder, Montana, 1901. 1724.5' Long, 3.3 Miles West Wye Track. Interstate Commerce Commission Account Number 12, Track Laying and Surfacing. Cost: $3122. Series I. Lines West. Butte Division. Other Subject Categories: Track, Track Laying and Removal

Great Northern Railway Authorization for Expenditure (AFE) 32795, Boulder, Montana, 1925. Lighting. Interstate Commerce Commission Account Number 16 Station and Office Buildings. Series II. Lines West. Other Subject Categories: Station Facilities,

AFE 32500, Boulder, Montana, 1926. Relay 1349' Feet of House Track with77-1/2# Rail at Boulder, Mont. Interstate Commerce Commission Account Number 9 Rails Cost: $1430. Series II. Lines West. Butte Division. Other Subject Categories: Track, Other

AFE 2515, Boulder, Montana, 1900. Interstate Commerce Commission Account Number 12, Track Laying and Surfacing. Series I. Lines West. Other Subject Categories: Track, Industry

AFE 20078, Amazon, Montana, 1912. Relay Track Between Townswith 90# Rail. Interstate Commerce Commission Account Number 9, Rails. Cost: $34785. Series I. Lines West. Butte Division. Other Subject Categories: Track Maintenance, Rail

AFE 17163, Boulder, Montana, 1910. Relay Track Thru Boulder Tunnel, Distance of 6204 Feet withNew 90 # Rail. Interstate Commerce Commission Account Number 9, Rails. Cost: $3324. Series I. Lines West. Butte Division. Other Subject Categories: Track, Mainline

AFE 11841, Boulder, Montana, 1905. Interstate Commerce Commission Account Number 6, Bridges, Trestles, Culverts. Series I. Lines West. Other Subject Categories: Structures, Bridges

AFE 11470, Boulder, Montana, 1919. Renew 550 Feet- 2" Water Pipe From Sump to Hydrant. Interstate Commerce Commission Account Number 18, Water Stations. Cost: $350. Series II. Lines West. Butte Division. Other Subject Categories: Servicing Facilities, Water

AFE 1040, Boulder, Montana, 1899. Erect Sand House. Interstate Commerce Commission Account Number 20, Shops and Engine Houses. Cost: $50. Series I. Lines West. Butte Division. Other Subject Categories: Servicing Facilities, Sand

AFE 1036, Boulder, Montana, 1899. Extend. Interstate Commerce Commission Account Number 12, Track Laying and Surfacing. Cost: $379. Series I. Lines West. Butte Division. Other Subject Categories: Track, Passing

AFE 10330, Portal, Montana, 1919. Replace Present 4' X 6' Privy with Standard 6' X 6' Privy at Depot at Portal, and Provide Two Ladders, One for Each Section House, at Boulder. Interstate Commerce Commission Account Number 16, Station and Office Buildings. Cost: $80. Series II. Lines West. Butte Division. Other Subject Categories: Station Facilities