Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse of Poultry Producers Association at Portland, Oregon, prepared in 1945. Burlington Northern File Number L-12-20, Reference Number 10109.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1935. Burlington Northern File Number RS-176, Reference Number 10107, Sheet 001.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1935. Burlington Northern File Number RS-177, Reference Number 10107, Sheet 002.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1935. Burlington Northern File Number RS-175, Reference Number 10106, Sheet 002.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1935. Burlington Northern File Number RS-174, Reference Number 10106, Sheet 001.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1949. Burlington Northern File Number RS-177A, Reference Number 10107.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1955. Burlington Northern File Number PQ-133, Reference Number 10105, Sheet 002.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1955. Burlington Northern File Number PQ-133, Reference Number 10105, Sheet 003.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1955. Burlington Northern File Number PQ-133, Reference Number 10105, Sheet 001.

Spokane, Portland, and Seattle Railway Engineering Drawing: Warehouse on Union Avenue at Portland, Oregon, prepared in 1957. Burlington Northern File Number PQ-139, Reference Number 10106.