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: 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, 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 57-807-1, Reference Number 10109, Sheet 001.