Northern Pacific Engineering Drawing: General Plan/Bill of Material, Bridge 87 (11?), west of Big Timber, Montana, Line Segment 041, Milepost 87.9. Sheet 787 - 55, 1909. Note: Concrete trestle

Northern Pacific Engineering Drawing: Walk Addition, Bridge 87 (11?), west of Big Timber, Montana, Line Segment 041, Milepost 87.9. Sheet 787 - 55, undated.

Plat Map of Northern Pacific facilities at Big Timber, Montana, undated, Sheet Number 1, Line Segment 41, showing the Billings-Helena line.

Plat Map of Northern Pacific facilities at Big Timber, Montana, undated, Sheet Number 2, Line Segment 41, showing the Billings-Helena line.

Plat Map of Northern Pacific facilities at Big Timber, Montana, undated, Sheet Number 3, Line Segment 41, showing the Billings-Helena line.