Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1950. Burlington Northern File Number 4930-12, Reference Number 10108, Sheet 012.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1950. Burlington Northern File Number 4930-14, Reference Number 10108, Sheet 014.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1949. Burlington Northern File Number 4930-14A, Reference Number 10103, Sheet 14A.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1949. Burlington Northern File Number 4930-13, Reference Number 10104, Sheet 013.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1911. Burlington Northern File Number 4930-2, Reference Number 10104, Sheet 002.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1911. Burlington Northern File Number 4930-5, Reference Number 10104, Sheet 005.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1911. Burlington Northern File Number 4930-6, Reference Number 10104, Sheet 006.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1911. Burlington Northern File Number 4930-1, Reference Number 10104.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1911. Burlington Northern File Number 4930-3, Reference Number 10104, Sheet 003.

Northern Pacific Engineering Drawing: Depot at Kelso, Washington, prepared in 1911. Burlington Northern File Number 4930-4, Reference Number 10104, Sheet 004.