Plat Map of Northern Pacific facilities at Walair, Washington, undated, Sheet Number 1, Line Segment 450, showing the Ainsworth Junction-Dayton line.

Plat Map of Northern Pacific facilities at Walla Walla, Washington, undated, Sheet Number 1, Line Segment 450, showing the Ainsworth Junction-Dayton line, yards, industry spurs.

Plat Map of Northern Pacific facilities at Walla Walla, Washington, undated, Sheet Number 1, Line Segment 450, showing the Ainsworth Junction-Dayton line.

Plat Map of Northern Pacific facilities at Walla Walla, Washington, undated, Sheet Number 3, Line Segment 450, showing the Ainsworth Junction-Dayton line.

Plat Map of Northern Pacific facilities at Walla Walla, Washington, undated, Sheet Number 2, Line Segment 450, showing the Ainsworth Junction-Dayton line, industry spurs, Union Pacific roundhouse.

Plat Map of Northern Pacific facilities at Walla Walla, Washington, undated, Sheet Number 3, Line Segment 450, showing the Ainsworth Junction-Dayton line.

Plat Map of Northern Pacific facilities at Walla Walla, Washington, undated, Sheet Number 2, Line Segment 450, showing the Ainsworth Junction-Dayton line.

Plat Map of Northern Pacific facilities at Wapato, Washington, May 14, 1945, Sheet Number 1, Line Segment 49, showing the Ellensburg-Rainier (Auburn) line.

Plat Map of Northern Pacific facilities at Wapato, Washington, May 14, 1945, Sheet Number 3, Line Segment 49, showing the Ellensburg-Rainier (Auburn) line.

Plat Map of Northern Pacific facilities at Wapato, Washington, May 14, 1945, Sheet Number 2, Line Segment 49, showing the Ellensburg-Rainier (Auburn) line.