Spokane, Portland, and Seattle Railway Engineering Drawing: Dock, North Bank at Portland, Oregon, prepared in 1925. Burlington Northern File Number AA-371, Reference Number 10112.

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, 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 57-727-6, Reference Number 10109, Sheet 006.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon, prepared in 1957. Burlington Northern File Number 57-727-4, Reference Number 10109, Sheet 004.

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 57-727-9, Reference Number 10109, Sheet 009.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon, prepared in 1957. Burlington Northern File Number 57-727-7, Reference Number 10109, Sheet 007.

Spokane, Portland, and Seattle Railway Engineering Drawing: Dock Extension: Traveling Marine Tower at Portland, Oregon, prepared in 1957. Burlington Northern File Number 57-807-1, Reference Number 10109, Sheet 001.

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.