Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1982. Burlington Northern File Number 5088, Reference Number 10107, Sheet 001.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1972. Burlington Northern File Number 5088, Reference Number 10109.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1967. Burlington Northern File Number 5088, Reference Number 10111, Sheet 02A.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1967. Burlington Northern File Number 5088, Reference Number 10112, Sheet 013.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1964. Burlington Northern File Number 5088, Reference Number 10109, Sheet 03A.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1963. Burlington Northern File Number 5088, Reference Number 10107, Sheet 003.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1959. Burlington Northern File Number 5088, Reference Number 10108, Sheet 001.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1959. Burlington Northern File Number 5088, Reference Number 10108, Sheet 008.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1959. Burlington Northern File Number 5088, Reference Number 10108, Sheet 007.

Northern Pacific Engineering Drawing: Yard Office at Yardley, Washington, prepared in 1958. Burlington Northern File Number 5088, Reference Number 10108, Sheet 004.