Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1948. Burlington Northern File Number 8727-4, Reference Number 10109.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1948. Burlington Northern File Number 8727-2, Reference Number 10112.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1948. Burlington Northern File Number 8727-3, Reference Number 10109.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1958. Burlington Northern File Number 8727-34, Reference Number 10102.

Great Northern Engineering Drawing: Power House at Interbay, Washington, undated. Burlington Northern File Number 8727-6, Reference Number 101.

Great Northern Engineering Drawing: Power House at Interbay, Washington, undated. Burlington Northern File Number 8727, Reference Number 101.

Great Northern Engineering Drawing: Power House Oil Furnace at Interbay, Washington. Burlington Northern File Number 8727, Reference Number 101.

Great Northern Engineering Drawing: Power House Oil Furnace at Interbay, Washington. Burlington Northern File Number 8727, Reference Number 101.

Great Northern Engineering Drawing: Power House at Interbay, Washington, undated. Burlington Northern File Number 8727, Reference Number 101.

Great Northern Engineering Drawing: Power House Oil Furnace at Interbay, Washington. Burlington Northern File Number 8727, Reference Number 101.