Plat Map of Union Pacific facilities at Milton, Oregon, January 13, 1945, Sheet Number 3, showing the Pendleton-Tucannon line.

Plat Map of Union Pacific facilities at Milton, Oregon, January 13, 1945, Sheet Number 4, showing the Pendleton-Tucannon line.

Plat Map of Union Pacific facilities at Milton, Oregon, January 13, 1945, Sheet Number 5, showing the Pendleton-Tucannon line.

Plat Map of Union Pacific facilities at Portland, Oregon, February 11, 1982, Sheet Number 2, Line Segment 647, showing the South Rivergate yard.

Plat Map of Union Pacific facilities at Portland, Oregon, February 11, 1982, Sheet Number 3, Line Segment 647, showing the South Rivergate yard.

Plat Map of Union Pacific facilities at Portland, Oregon, February 11, 1982, Sheet Number 1, Line Segment 647, showing the South Rivergate yard.

Plat Map of Union Pacific facilities at Portland, Oregon, February 11, 1982, Sheet Number 3, Line Segment 647, showing the South Rivergate yard.

Plat Map of Union Pacific facilities at Portland, Oregon, February 11, 1982, Sheet Number 1, Line Segment 647, showing the South Rivergate yard.

Plat Map of Union Pacific facilities at Portland, Oregon, undated, Sheet Number 1, Line Segment 647, showing the South Rivergate line.

Plat Map of Union Pacific facilities at Portland, Oregon, undated, Sheet Number 1, Line Segment 647, showing the South Rivergate line.