Spokane, Portland, and Seattle Railway Engineering Drawing: Interlocking Station at North Portland, Oregon, prepared in 1948. Burlington Northern File Number PQ-293, Reference Number 10108.

Spokane, Portland, and Seattle Railway Engineering Drawing: Interlocking Station at North Portland, Oregon, prepared in 1948. Burlington Northern File Number PQ-293, Reference Number 10108.

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.