Great Northern Engineering Drawing: Yard Office at Interbay, Washington, prepared in 1967. Burlington Northern File Number 9721-6, Reference Number 10110, Sheet A-6.

Great Northern Engineering Drawing: Yard Office at Interbay, Washington, prepared in 1967. Burlington Northern File Number 9721-5, Reference Number 10110, Sheet A-5.

Great Northern Engineering Drawing: Yard Office at Interbay, Washington, prepared in 1967. Burlington Northern File Number 9721-1, Reference Number 10110, Sheet A-1.

Great Northern Engineering Drawing: Yard Office at Interbay, Washington, prepared in 1967. Burlington Northern File Number 9721-4, Reference Number 10110, Sheet A-4.

Great Northern Engineering Drawing: Yard Office at Interbay, Washington, prepared in 1967. Burlington Northern File Number 9721, Reference Number 10110, Sheet 002.

Great Northern Engineering Drawing: Yard Office Heating Plan at Interbay, Washington, prepared in 1959. Burlington Northern File Number 146, Reference Number 10105.

Great Northern Engineering Drawing: Yard Office Heating Plan at Interbay, Washington, prepared in 1959. Burlington Northern File Number 146, Reference Number 10105.

Great Northern Engineering Drawing: Yard Office Heating Plan at Interbay, Washington, prepared in 1959. Burlington Northern File Number 146, Reference Number 10105.

Great Northern Engineering Drawing: Yard Office Heating Plan at Interbay, Washington, prepared in 1959. Burlington Northern File Number 146, Reference Number 10105.

Great Northern Engineering Drawing: Yard Office Ducts for Gas Heaters at Interbay, Washington, prepared in 1953. Burlington Northern File Number B-551, Reference Number 10109.