Great Northern Plat Map, Omak, Washington. Milepost Easement at Omak, Great Northern Washington Volume 6 Map 24a, 1957.

Great Northern Plat Map, Omak, Washington. Milepost 94-97, Great Northern Washington Volume 6 Map 24, undated.

Great Northern Engineering Drawing: unnamed structure at Omak, Washington, prepared in 1979. Burlington Northern File Number 1484, Reference Number 10110, Sheet A-2.

Great Northern Engineering Drawing: unnamed structure at Omak, Washington, prepared in 1979. Burlington Northern File Number 1484, Reference Number 10110, Sheet A-1.

Great Northern Engineering Drawing: Fuel Oil Storage Tank at Omak, Washington, prepared in 1945. Burlington Northern File Number 223-5643-1, Reference Number 10105, Sheet 001.

Great Northern Engineering Drawing: Fuel Oil Column at Omak, Washington, prepared in 1943. Burlington Northern File Number 11057-1, Reference Number 10105, Sheet 001.

Great Northern Engineering Drawing: Depot and Maintenance of Way Building Rollup Door Details at Omak, Washington, prepared in 1980. Burlington Northern File Number 1476, Reference Number 10102.

Great Northern Engineering Drawing: Depot and Maintenance of Way Building at Omak, Washington, prepared in 1980. Burlington Northern File Number 1475, Reference Number 10101, Sheet E-1.

Great Northern Engineering Drawing: Depot and Maintenance of Way Building at Omak, Washington, prepared in 1965. Burlington Northern File Number 1475, Reference Number 10106, Sheet A-1.