Plat Map of Northern Pacific facilities at Helena, Montana, September 30, 1931, Sheet Number 3, Line Segment 713, showing the Northern Pacific yard, spurs, depot.

Plat Map of Northern Pacific facilities at Helena, Montana, September 30, 1931, Sheet Number 3, Line Segment 713, showing the Northern Pacific mainline, industry spurs.

Plat Map of Northern Pacific facilities at Helena, Montana, June 14, 1917, Sheet Number 4, Line Segment 713, showing the Northern Pacific mainline, Rimini branch.

Plat Map of Northern Pacific facilities at Helena, Montana, June 14, 1917, Sheet Number 4, Line Segment 713, showing the Northern Pacific mainline, Great Northern interchange.

Plat Map of Northern Pacific facilities at Helena, Montana, June 14, 1917, Sheet Number 2, Line Segment 713, showing the Northern Pacific mainline, Great Northern interchange.

Plat Map of Northern Pacific facilities at Helena, Montana, June 14, 1917, Sheet Number 1, Line Segment 713, showing the Northern Pacific mainline, Great Northern interchange.

Plat Map of Northern Pacific facilities at Hazel, Washington, June 21, 1909, Sheet Number 2, Line Segment 406, showing the Darrington-Kruse Junction line.

Plat Map of Northern Pacific facilities at Hazel, Washington, June 21, 1909, Sheet Number 1, Line Segment 406, showing the Darrington-Kruse Junction line.

Plat Map of Northern Pacific facilities at Hauser, Idaho, May 20, 1931, Sheet Number 2, Line Segment 45, showing the Kootenai-Spokane line.

Plat Map of Northern Pacific facilities at Hauser, Idaho, May 20, 1931, Sheet Number 3, Line Segment 45, showing the Kootenai-Spokane line.