Northern Pacific Engineering Drawing: Tie Plan, Bridge 22.1 - Nisqually River, south of Roy, Washington, Line Segment 400, Milepost 22.9. Sheet 443 - 31, 1937.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 22.1 - Nisqually River, south of Roy, Washington, Line Segment 400, Milepost 22.9. Sheet 443 - 31, 1925.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 22 - Jocko River, west of Evaro, Montana, Line Segment 043, Milepost 22.6. Sheet 441 - 26, 1954.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 21.8 - Finlay Creek, west of Arlee, Montana, Line Segment 043, Milepost 21.8. Sheet 441 - 38, 1957.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 21, north of Stuart, Montana, Line Segment 327, Milepost 21.1. Sheet 1274 - 1, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 2.1 - Wildcat Creek, north of Elma, Washington, Line Segment 425, Milepost 2.34. Sheet 1264 - 34, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 2.1 - Wildcat Creek, north of Elma, Washington, Line Segment 425, Milepost 2.34. Sheet 1264 - 34, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 206 (259) - Missouri River, west of Townsend, Montana, Line Segment 041, Milepost 206.3. Sheet 1066 - 2, 1938.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 206 (259) - Missouri River, west of Townsend, Montana, Line Segment 041, Milepost 206.3. Sheet 1066 - 2, 1938.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 2 - Stillaguamish River, east of Arlington, Washington, Line Segment 406, Milepost 10.4. Sheet 444 - 22, undated.