Northern Pacific Engineering Drawing: Depot at Trentwood, Washington, prepared in 1961. Burlington Northern File Number 5201, Reference Number 10105, Sheet 005.

Northern Pacific Engineering Drawing: Depot at Trentwood, Washington, prepared in 1961. Burlington Northern File Number 5201, Reference Number 10111, Sheet 002.

Northern Pacific Engineering Drawing: Depot at Trentwood, Washington, prepared in 1961. Burlington Northern File Number 5201, Reference Number 10111, Sheet 004.

Northern Pacific Engineering Drawing: Depot at Trentwood, Washington, prepared in 1974. Burlington Northern File Number 5201, Reference Number 10111, Sheet 001.

Northern Pacific Engineering Drawing: Depot at Trentwood, Washington, undated. Burlington Northern File Number 5201, Reference Number 101, Sheet 001.

Northern Pacific Engineering Drawing: Depot at Trentwood, Washington, undated. Burlington Northern File Number 5201, Reference Number 101, Sheet 002.

Northern Pacific Engineering Drawing: Depot at Trentwood, Washington, undated. Burlington Northern File Number 5201, Reference Number 101, Sheet 003.