Northern Pacific Engineering Drawing: Depot at Missoula, Montana, prepared in 1901. Burlington Northern File Number 9864-8, Reference Number 10112.

Northern Pacific Engineering Drawing: Depot at Missoula, Montana, prepared in 1901. Burlington Northern File Number 9864-1, Reference Number 10105, Sheet 001.

Northern Pacific Engineering Drawing: Control Tower at Missoula, Montana, prepared in 1967. Burlington Northern File Number 4821, Reference Number 10104, Sheet 006.

Northern Pacific Engineering Drawing: Control Tower at Missoula, Montana, prepared in 1967. Burlington Northern File Number 4821, Reference Number 10104, Sheet 001.

Northern Pacific Engineering Drawing: Control Tower at Missoula, Montana, prepared in 1966. Burlington Northern File Number 4821, Reference Number 10111, Sheet 002.

Northern Pacific Engineering Drawing: Control Tower at Missoula, Montana, prepared in 1966. Burlington Northern File Number 4821, Reference Number 10107.

Northern Pacific Engineering Drawing: Control Tower at Missoula, Montana, prepared in 1966. Burlington Northern File Number 4821, Reference Number 10111, Sheet 004.

Northern Pacific Engineering Drawing: Control Tower at Missoula, Montana, prepared in 1966. Burlington Northern File Number 4821, Reference Number 10111, Sheet 003.

Northern Pacific Engineering Drawing: Control Tower at Missoula, Montana, prepared in 1966. Burlington Northern File Number 4821, Reference Number 10108, Sheet 005.

Northern Pacific Engineering Drawing: Communications Shop Install Heating at Missoula, Montana, prepared in 1971. Burlington Northern File Number SK-2304, Reference Number 10110.