Northern Pacific Engineering Drawing: Tie Plan, Bridge 9 - Des Chutes River, west of Olympia, Washington, Line Segment 402, Milepost 10.0. Sheet 1072 - 6, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 9 - Des Chutes River, west of Olympia, Washington, Line Segment 402, Milepost 10.0. Sheet 1072 - 16, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 9 - Black River, Black River, Washington, Line Segment 051, Milepost 9.7. Sheet 433 - 26, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 87 - Highway 20, Sedro - Woolley, Washington, Line Segment 403, Milepost 87.05. Sheet 1233 - 16, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 84 - Toutle River, south of Vader, Washington, Line Segment 052, Milepost 84.9. Sheet 429 - 18, 1960.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 8.3 - Van Sycle Creek, south of Zangar Junction, Washington, Line Segment 451, Milepost 8.95. Sheet 1266 - 27, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 8.3 - Van Sycle Creek, south of Zangar Junction, Washington, Line Segment 451, Milepost 8.95. Sheet 1266 - 27, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 83 - Harvey Creek, west of Bearmouth, Montana, Line Segment 042, Milepost 83.5. Sheet 424 - 13, 1961.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 8.2 - Van Sycle Creek, south of Zangar Junction, Washington, Line Segment 451, Milepost 8.50. Sheet 1264 - 7, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 8.2 - Van Sycle Creek, south of Zangar Junction, Washington, Line Segment 451, Milepost 8.50. Sheet 1264 - 7, undated.