Great Northern Engineering Drawing: Frame Wood Mill With Steel Trusses at Delta, Washington, prepared in 1923. Burlington Northern File Number 8619, Reference Number 10112.

Great Northern Engineering Drawing: Frame Wood Mill With Steel Trusses at Delta, Washington, prepared in 1923. Burlington Northern File Number 8619, Reference Number 10112.

Great Northern Engineering Drawing: Frame Wood Mill With Steel Trusses at Delta, Washington, prepared in 1923. Burlington Northern File Number 8619, Reference Number 10112.

Great Northern Engineering Drawing: Frame Wood Mill With Steel Trusses at Delta, Washington, prepared in 1923. Burlington Northern File Number 8619, Reference Number 10112.

Great Northern Engineering Drawing: Frame Wood Mill With Steel Trusses at Delta, Washington, prepared in 1923. Burlington Northern File Number 8619, Reference Number 10112.

Great Northern Engineering Drawing: Frame Wood Mill With Steel Trusses at Delta, Washington, prepared in 1923. Burlington Northern File Number 8619, Reference Number 10102.

Great Northern Engineering Drawing: Hump Yard Control Building at Interbay, Washington, prepared in 1967. Burlington Northern File Number 9721, Reference Number 10110, Sheet A-1.

Great Northern Engineering Drawing: Hump Yard Control Building at Interbay, Washington, prepared in 1967. Burlington Northern File Number 9721, Reference Number 10106.

Great Northern Engineering Drawing: Hump Yard Control Building at Interbay, Washington, prepared in 1968. Burlington Northern File Number 9721, Reference Number 10110, Sheet 003.

Great Northern Engineering Drawing: Interlocking Tower at North Portal at Seattle, Washington, prepared in 1956. Burlington Northern File Number 9464-2, Reference Number 10104.