Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon, prepared in 1957. Burlington Northern File Number 57-727-11, Reference Number 10109, Sheet 011.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon, prepared in 1957. Burlington Northern File Number 57-727-8, Reference Number 10109, Sheet 008.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon, prepared in 1957. Burlington Northern File Number 57-727-5, Reference Number 10109, Sheet 005.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon, prepared in 1957. Burlington Northern File Number 57-807-3, Reference Number 10104, Sheet 003.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon. Burlington Northern File Number 57-727-1, Reference Number 101.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon. Burlington Northern File Number 57-807-2, Reference Number 101, Sheet 002.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon. Burlington Northern File Number 57-727-3, Reference Number 101.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon. Burlington Northern File Number 57-727-2, Reference Number 101.

Spokane, Portland, and Seattle Railway Engineering Drawing: Electric Shop at Portland, Oregon, prepared in 1943. Burlington Northern File Number PQ-251, Reference Number 10107, Sheet PS1.

Spokane, Portland, and Seattle Railway Engineering Drawing: Electric Shop at Portland, Oregon, prepared in 1952. Burlington Northern File Number PQ-131, Reference Number 10107, Sheet J.