Great Northern Engineering Drawing: Depot at Hillyard, Washington, prepared in 1941. Burlington Northern File Number 7851-6, Reference Number 10103, Sheet 006.

Great Northern Engineering Drawing: Monorail System at Hillyard, Washington, prepared in 1938. Burlington Northern File Number 8947-9134, Reference Number 10104, Sheet 001.

Great Northern Engineering Drawing: Monorail System at Hillyard, Washington, prepared in 1938. Burlington Northern File Number 8947-9134, Reference Number 10105, Sheet 006.

Great Northern Engineering Drawing: Monorail System at Hillyard, Washington, prepared in 1938. Burlington Northern File Number 8947-9134, Reference Number 10104.

Great Northern Engineering Drawing: Monorail System at Hillyard, Washington, prepared in 1938. Burlington Northern File Number 8947-9134, Reference Number 10104.

Great Northern Engineering Drawing: Monorail System at Hillyard, Washington, prepared in 1938. Burlington Northern File Number 8947-9134, Reference Number 10104, Sheet 004.

Great Northern Engineering Drawing: Power Plant Pump Rod at Hillyard, Washington. Burlington Northern File Number SK-2043, Reference Number 101.

Great Northern Engineering Drawing: Roundhouse and Shops, Foundation Milling Machine at Hillyard, Washington, prepared in 1910. Burlington Northern File Number 8138, Reference Number 10106.

Great Northern Engineering Drawing: Roundhouse and Shops, Foundation Boring and Drilling Machine at Hillyard, Washington, prepared in 1910. Burlington Northern File Number 8138, Reference Number 10106.

Great Northern Engineering Drawing: Roundhouse and Shops, Machinery and Shafting at Hillyard, Washington, prepared in 1910. Burlington Northern File Number 8138, Reference Number 10107.