Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1949. Burlington Northern File Number RS-177A, Reference Number 10107.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1955. Burlington Northern File Number PQ-133, Reference Number 10105, Sheet 002.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1955. Burlington Northern File Number PQ-133, Reference Number 10105, Sheet 003.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1955. Burlington Northern File Number PQ-133, Reference Number 10105, Sheet 001.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1957. Burlington Northern File Number PQ-139, Reference Number 10106.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1963. Burlington Northern File Number RS-177B, Reference Number 10107.

Spokane, Portland, and Seattle Railway Engineering Drawing: Yard Proposed, Changes to Accommodate Universal Carloading at Portland, Oregon, prepared in 1962. Burlington Northern File Number PQ-326, Reference Number 10106, Sheet 001.

Spokane, Portland, and Seattle Railway Engineering Drawing: Yard Plot Plan at Portland, Oregon, prepared in 1973. Burlington Northern File Number PQ-314, Reference Number 10108.