Northern Pacific Engineering Drawing: Yardmaster Tower (also Duluth, Minnesota) Section Drawing at Pasco, Washington, prepared in 1969. Burlington Northern File Number 9812, Reference Number 10110, Sheet 001.

Northern Pacific Engineering Drawing: Yardmaster Tower (also Duluth, Minnesota) at Pasco, Washington, prepared in 1969. Burlington Northern File Number 9812, Reference Number 10110, Sheet 002.

Northern Pacific Engineering Drawing: Yardmaster Tower (also Duluth, Minnesota) at Pasco, Washington, prepared in 1969. Burlington Northern File Number 9812, Reference Number 10110, Sheet 001.

Northern Pacific Engineering Drawing: Yardmaster Tower (also Duluth, Minnesota) at Pasco, Washington, prepared in 1969. Burlington Northern File Number 9812, Reference Number 10109, Sheet 001.

Northern Pacific Engineering Drawing: Yard Office and Tower at Pasco, Washington, undated. Burlington Northern File Number 4628, Reference Number 101.

Northern Pacific Engineering Drawing: Yard Office and Tower at Pasco, Washington, undated. Burlington Northern File Number 4628, Reference Number 101.

Northern Pacific Engineering Drawing: Yard Office and Tower Basement Plan at Pasco, Washington. Burlington Northern File Number 4628, Reference Number 101.

Northern Pacific Engineering Drawing: Yard Office and Tower Basement Plan at Pasco, Washington. Burlington Northern File Number 4628, Reference Number 101.

Northern Pacific Engineering Drawing: Yard Office and Tower Fire Escape Stairs and Platform at Pasco, Washington. Burlington Northern File Number 4628, Reference Number 101.

Northern Pacific Engineering Drawing: Yard Office and Tower Fire Escape Sample at Pasco, Washington, prepared in 1974. Burlington Northern File Number 4628, Reference Number 10107, Sheet 001.