Northern Pacific Engineering Drawing: Pin/Nuts/Ring Floor, Bridge 11 - Stillaguamish River, east of Oso, Washington, Line Segment 406, Milepost 19.6. Sheet 444 - 17, undated.

Northern Pacific Engineering Drawing: Repair to Stringer Conn, Bridge 11 - Stillaguamish River, east of Oso, Washington, Line Segment 406, Milepost 19.6. Sheet 444 - 17, undated.

Northern Pacific Engineering Drawing: Repair to Top Chord Truss Span, Bridge 18 - Boulder River, east of Oso, Washington, Line Segment 406, Milepost 25.8. Sheet 444 - 24, undated.

Northern Pacific Engineering Drawing: Shop Plan - 155 Foot Span, Bridge 10 - Deek Creek, Oso, Washington, Line Segment 406, Milepost 18.5. Sheet 444 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - 155 Foot Span, Bridge 10 - Deek Creek, Oso, Washington, Line Segment 406, Milepost 18.5. Sheet 444 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Anchor Bolts, Bridge 10 - Deek Creek, Oso, Washington, Line Segment 406, Milepost 18.5. Sheet 444 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Bolts, Bridge 10 - Deek Creek, Oso, Washington, Line Segment 406, Milepost 18.5. Sheet 444 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Chord/Strut, Bridge 10 - Deek Creek, Oso, Washington, Line Segment 406, Milepost 18.5. Sheet 444 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Columns, Bridge 10 - Deek Creek, Oso, Washington, Line Segment 406, Milepost 18.5. Sheet 444 - 4, undated.