Northern Pacific Engineering Drawing: Depot at Elma, Washington, prepared in 1935. Burlington Northern File Number 12004, Reference Number 10110.

Northern Pacific Engineering Drawing: Depot at Elma, Washington, prepared in 1936. Burlington Northern File Number 12000-12030, Reference Number 10112.

Northern Pacific Engineering Drawing: Depot at Elma, Washington, prepared in 1938. Burlington Northern File Number 49-11, Reference Number 10103.

Northern Pacific Engineering Drawing: Depot at Elma, Washington, prepared in 1969. Burlington Northern File Number 41-11, Reference Number 10101.

Northern Pacific Engineering Drawing: unnamed structure at Elma, Washington, prepared in 1936. Burlington Northern File Number 5200-5285, Reference Number 10103, Sheet 002.

Northern Pacific Engineering Drawing: unnamed structure at Elma, Washington, prepared in 1938. Burlington Northern File Number 5200-5285, Reference Number 10105.

Northern Pacific Engineering Drawing: unnamed structure at Elma, Washington, prepared in 1938. Burlington Northern File Number 5200-5285, Reference Number 10105, Sheet 001.