Plat Map of Northern Pacific facilities at Greycliff, Montana, April 18, 1949, Sheet Number 1, Line Segment 41, showing the Billings-Helena line.

Plat Map of Northern Pacific facilities at Greycliff, Montana, April 18, 1949, Sheet Number 4, Line Segment 41, showing the Billings-Helena line.

Plat Map of Northern Pacific facilities at Greycliff, Montana, April 18, 1949, Sheet Number 6, Line Segment 41, showing the Billings-Helena line.

Plat Map of Northern Pacific facilities at Greycliff, Montana, April 18, 1949, Sheet Number 2, Line Segment 41, showing the Billings-Helena line.

Plat Map of Northern Pacific facilities at Greycliff, Montana, April 18, 1949, Sheet Number 3, Line Segment 41, showing the Billings-Helena line.

Plat Map of Northern Pacific facilities at Greycliff, Montana, April 18, 1949, Sheet Number 5, Line Segment 41, showing the Billings-Helena line.

Northern Pacific Engineering Drawing: west Abutment, Bridge 79.1 - Highway Underpass, west of Greycliff, Montana, Line Segment 041, Milepost 79.9. Sheet 1070 - 13, undated.