Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305-1, Reference Number 10105.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305-3, Reference Number 10105.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305, Reference Number 10103, Sheet 002.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305, Reference Number 10103, Sheet 005.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305, Reference Number 10107, Sheet 001.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305, Reference Number 10103, Sheet 002.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305, Reference Number 10103.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305-2, Reference Number 10107.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305, Reference Number 10103, Sheet 003.

Spokane, Portland, and Seattle Railway Engineering Drawing: Covered Inspection Pit at Vancouver, Washington, prepared in 1977. Burlington Northern File Number 1305, Reference Number 10103, Sheet 004.