Great Northern Engineering Drawing: Signal Maintainer and Track Forces Building, Metal 20 Foot X 56 Foot at Harlem, Montana (also at Brookston, Minnesota), prepared in 1964. Burlington Northern File Number 9665-M1, Reference Number 10110.

Great Northern Engineering Drawing: Signal Maintainer and Track Forces Building, Metal 20 Foot X 56 Foot Standard Material Building at Harlem, Montana (also Brookston, Minnesota), prepared in 1964. Burlington Northern File Number 9665-1, Reference Number 10108.

Great Northern Engineering Drawing: Signal Maintainer and Track Forces Building, Metal 20 Foot X 56 Foot Electrical Material Building at Harlem, Montana (also Brookston, Minnesota), prepared in 1967. Burlington Northern File Number 9665-E1, Reference Number 10109.

Great Northern Engineering Drawing: Signal Maintainer's and Motor Car House at Eureka, Montana, prepared in 1949. Burlington Northern File Number 9358-1, Reference Number 10109.

Great Northern Engineering Drawing: Signal Maintainer's and Motor Car House at Frazer, Montana, prepared in 1957. Burlington Northern File Number 9577-1, Reference Number 10104.

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.

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