Plat Map of Northern Pacific facilities at Ravalli, Montana, undated, Sheet Number 2, Line Segment 42, showing the Helena-Paradise line.

Plat Map of Northern Pacific facilities at Ravalli, Montana, undated, Sheet Number 3, Line Segment 42, showing the Helena-Paradise line.

Plat Map of Northern Pacific facilities at Ravalli, Montana, undated, Sheet Number 1, Line Segment 42, showing the Helena-Paradise line.

Northern Pacific Engineering Drawing: Walk Plan, Bridge 36 - Jocko River, west of Ravalli, Montana, Line Segment 043, Milepost 36.95. Sheet 441 - 22, undated.

Northern Pacific Engineering Drawing: Walk Plan, Bridge 35 - Jocko River, west of Ravalli, Montana, Line Segment 043, Milepost 35.95. Sheet 441 - 22, undated.

Northern Pacific Engineering Drawing: Walk Plan, Bridge 31 - Jocko River, west of Ravalli, Montana, Line Segment 043, Milepost 31.1. Sheet 441 - 22, undated.

Northern Pacific Engineering Drawing: Repair east Abutment/Pier 2, Bridge 31 - Jocko River, west of Ravalli, Montana, Line Segment 043, Milepost 31.1. Sheet 441 - 22, undated.