Northern Pacific Engineering Drawing: unnamed structure at Walla Walla, Washington, prepared in 1950. Burlington Northern File Number 5101, Reference Number 10107.

Northern Pacific Engineering Drawing: Engine House New Doors Account Track, Changes at Walla Walla, Washington, prepared in 1963. Burlington Northern File Number 5101, Reference Number 10104, Sheet 001.

Northern Pacific Engineering Drawing: Engine House Truss Plan and Sections at Walla Walla, Washington, prepared in 1950. Burlington Northern File Number 5101, Reference Number 10105, Sheet 002.

Northern Pacific Engineering Drawing: Engine House New Doors Account Track, Changes at Walla Walla, Washington, prepared in 1950, Reference Number 10105, Sheet 002.

Northern Pacific Engineering Drawing: Engine House at Walla Walla, Washington, prepared in 1950. Burlington Northern File Number 5101, Reference Number 10105.

Northern Pacific Engineering Drawing: Engine House Plan and Elevations at Walla Walla, Washington, prepared in 1950. Burlington Northern File Number 5101, Reference Number 10105, Sheet 001.

Northern Pacific Engineering Drawing: Diesel Oil Storage and Pumping Facilities at Walla Walla, Washington, prepared in 1950. Burlington Northern File Number 5101, Reference Number 10108.