Northern Pacific Engineering Drawing: Load Adjuster and Car Puller at Parkwater, Washington, prepared in 1962. Burlington Northern File Number 4719, Reference Number 10102, Sheet 001.

Northern Pacific Engineering Drawing: Load Adjuster and Car Puller at Parkwater, Washington, prepared in 1962. Burlington Northern File Number 4719, Reference Number 10102, Sheet 002.

Northern Pacific Engineering Drawing: Load Adjuster and Car Puller at Parkwater, Washington, prepared in 1960. Burlington Northern File Number 4719, Reference Number 10106, Sheet 003.

Northern Pacific Engineering Drawing: Load Adjuster and Car Puller at Missoula, Montana, undated. Burlington Northern File Number 4825, Reference Number 101, Sheet 002.

Northern Pacific Engineering Drawing: Load Adjuster and Car Puller at Missoula, Montana, prepared in 1968. Burlington Northern File Number 4825, Reference Number 10110, Sheet 003.

Northern Pacific Engineering Drawing: Load Adjuster and Car Puller at Missoula, Montana, prepared in 1967. Burlington Northern File Number 4825, Reference Number 10110, Sheet 001.

Northern Pacific Engineering Drawing: Interlocking Tower at South Portal at Seattle, Washington, prepared in 1939. Burlington Northern File Number 4748, Reference Number 10102, Sheet 001.

Northern Pacific Engineering Drawing: Interlocking Control Building at Tacoma, Washington, prepared in 1963. Burlington Northern File Number 4705, Reference Number 10106, Sheet 002.

Northern Pacific Engineering Drawing: Interlocking Control Building at Tacoma, Washington, prepared in 1963. Burlington Northern File Number 4705, Reference Number 10106, Sheet 003.

Northern Pacific Engineering Drawing: Interlocking Control Building at Tacoma, Washington, prepared in 1963. Burlington Northern File Number 4705, Reference Number 10106, Sheet 001.