Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1933. Burlington Northern File Number 8727-32, Reference Number 10109.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1933. Burlington Northern File Number 8711, Reference Number 10109, Sheet 207.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1933. Burlington Northern File Number 8711, Reference Number 10109, Sheet 207.

Great Northern Engineering Drawing: Power House Additional Piling at Interbay, Washington, prepared in 1934. Burlington Northern File Number 8711, Reference Number 101.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1934. Burlington Northern File Number 8727-27, Reference Number 10101.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1934. Burlington Northern File Number 8727-28, Reference Number 10101.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1934. Burlington Northern File Number 8727-30, Reference Number 10101.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1934. Burlington Northern File Number 8727-31, Reference Number 10101.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1934. Burlington Northern File Number 8727-29, Reference Number 10101.

Great Northern Engineering Drawing: Power House at Interbay, Washington, prepared in 1934. Burlington Northern File Number 8727-33, Reference Number 10101.