Northern Pacific Engineering Drawing: Tie Plan, Bridge 45, west of Mcdonald, Montana, Line Segment 043, Milepost 45.6. Sheet 1056 - 38, 1953.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 43, north of Deer Lodge, Montana, Line Segment 327, Milepost 43.8. Sheet 1073 - 20, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 42 (65), west of Avon, Montana, Line Segment 042, Milepost 42.8. Sheet 441 - 39, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 42 (65), west of Avon, Montana, Line Segment 042, Milepost 42.8. Sheet 441 - 39, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 41, Washington, Line Segment 046, Milepost 41.23. Sheet 1264 - 14, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 4.1 (7) - Madison River, west of Logan, Montana, Line Segment 326, Milepost 4.95. Sheet 441 - 54, 1953.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 41 - Trap Creek, west of Lebam, Washington, Line Segment 420, Milepost 41.11. Sheet 1066 - 15, 1946.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 41 - Trap Creek, west of Lebam, Washington, Line Segment 420, Milepost 41.11. Sheet 1066 - 15, 1937.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 41 - Porter Creek, west of Oakville, Washington, Line Segment 402, Milepost 41.4. Sheet 446 - 32, 1948.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 41 - Porter Creek, west of Oakville, Washington, Line Segment 402, Milepost 41.4. Sheet 446 - 32, 1938.