Great Northern Engineering Drawing: Signal Maintenance Building, 24 Foot X 24 Foot at Chinook, Montana, prepared in 1967. Burlington Northern File Number 9686-M1, Reference Number 10101.

Great Northern Engineering Drawing: Signal Maintenance Building, 24 Foot X 24 Foot at Chinook, Montana, prepared in 1966. Burlington Northern File Number 9686-1, Reference Number 10106.

Great Northern Engineering Drawing: Signal Maintainer's Tool House at Bellingham, Washington, prepared in 1946. Burlington Northern File Number 9418, Reference Number 10108.

Great Northern Engineering Drawing: Signal Maintainers House Plan and Electrical at Scenic, Washington, prepared in 1970. Burlington Northern File Number 9138-E1, Reference Number 10107.

Great Northern Engineering Drawing: Signal Maintainers House at Scenic, Washington, prepared in 1970. Burlington Northern File Number 9138-3, Reference Number 10106.

Great Northern Engineering Drawing: Signal Maintainers Building at Cut Bank, Montana, prepared in 1967. Burlington Northern File Number 9720-2, Reference Number 10111.

Great Northern Engineering Drawing: Signal Maintainers Building at Cut Bank, Montana, prepared in 1967. Burlington Northern File Number 9720-1, Reference Number 10111.

Great Northern Engineering Drawing: Signal Maintainer's and Motor Car House at Monroe, Washington (also Stanwood, Washington, Hinckley, Minnesota, Floodwood, Minnesota and Gildford, Montana), prepared in 1957. Burlington Northern File Number 9506-1, Reference Number 10105.

Great Northern Engineering Drawing: Signal Maintainer's and Motor Car House at Monroe, Washington, prepared in 1956. Burlington Northern File Number 9506, Reference Number 10103.

Great Northern Engineering Drawing: Signal Maintainer's and Motor Car House at Glasgow, Montana, prepared in 1956. Burlington Northern File Number 9559-1, Reference Number 10107.