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