Northern Pacific Engineering Drawing: Signal Maintainers House Toilet and Water Facilities at Manitoba Junction, Minnesota (also Medora, North Dakota, Sanders, Montana, Louisville, Montana and Avon, Montana), prepared in 1959. Burlington Northern File Number 4960, Reference Number 10104, Sheet 001.

Northern Pacific Engineering Drawing: Signal Maintainer's Tool House at Alaskan Way near Bell Street in Seattle, Washington, prepared in 1945. Burlington Northern File Number 4848, Reference Number 10111.

Northern Pacific Engineering Drawing: Signal Maintainer's Tool House at Alaskan Way near Bell Street in Seattle, Washington, prepared in 1945. Burlington Northern File Number 4848, Reference Number 10111.

Northern Pacific Engineering Drawing: Telephone Exchange Building at Leadore, Idaho, prepared in 1960. Burlington Northern File Number 5209, Reference Number 10102, Sheet 001.

Northern Pacific Engineering Drawing: Waybill and Telephone Building at Longview Junction, Washington, prepared in 1968. Burlington Northern File Number 5200, Reference Number 10104, Sheet 001.