Northern Pacific Engineering Drawing: Yard Office, North End of Middle Yard at Seattle, Washington, prepared in 1960. Burlington Northern File Number 4859-1, Reference Number 10111, Sheet 001.

Northern Pacific Engineering Drawing: Yard Office, North End of Middle Yard at Seattle, Washington, prepared in 1960. Burlington Northern File Number 4859-2, Reference Number 10111, Sheet 002.

Northern Pacific Engineering Drawing: Yard Office, North End of Middle Yard at Seattle, Washington, undated. Burlington Northern File Number 4861, Reference Number 101, Sheet 001.

Northern Pacific Engineering Drawing: Yard Office, North End of Middle Yard at Seattle, Washington, undated. Burlington Northern File Number 4861, Reference Number 101, Sheet 002.

Northern Pacific Engineering Drawing: Yard Office, West Seattle at Seattle, Washington, prepared in 1967. Burlington Northern File Number 4857-1, Reference Number 10103, Sheet 001.

Northern Pacific Engineering Drawing: Yard Office, West Seattle at Seattle, Washington, prepared in 1967. Burlington Northern File Number 4857-2, Reference Number 10103, Sheet 002.

Northern Pacific Engineering Drawing: Yard Office, West Seattle at Seattle, Washington, prepared in 1967. Burlington Northern File Number 4857-3, Reference Number 101, Sheet 003.

Northern Pacific Engineering Drawing: Yard Office, West Seattle at Seattle, Washington, prepared in 1967. Burlington Northern File Number 4857-5, Reference Number 101, Sheet 005.

Northern Pacific Engineering Drawing: Yard Office, West Seattle at Seattle, Washington, prepared in 1967. Burlington Northern File Number 4857-4, Reference Number 10103, Sheet 004.

Northern Pacific Engineering Drawing: Yard Office, West Seattle at Seattle, Washington, prepared in 1986. Burlington Northern File Number 12047, Reference Number 10108, Sheet 002.