Northern Pacific Engineering Drawing: Trestle Details, Bridge 54 - Starr Road, west of Hauser, Washington, Line Segment 045, Milepost 54.54, undated.

Northern Pacific Engineering Drawing: Trestle Details, Bridge 10 - Highway, south of Wilburton, Washington, Line Segment 405, Milepost 10.1. Sheet 771 - 21, undated.

Northern Pacific Engineering Drawing: Trestle Bridge, Bridge 11.1 - Mercer Slough, south of Wilburton, Washington, Line Segment 405, Milepost 11.5. Sheet 1264 - 16, undated.

Northern Pacific Engineering Drawing: Trestle Bridge, Bridge 11.1 - Mercer Slough, south of Wilburton, Washington, Line Segment 405, Milepost 11.5. Sheet 1264 - 16, undated.

Northern Pacific Engineering Drawing: Trestle and Shoofly, Bridge 0.1 - Montana Street, Butte, Montana, Line Segment 327, Milepost 0.8. Sheet 1070 - 8, undated.

Northern Pacific Engineering Drawing: Treated Timber Detail, Bridge 87+4250 - Buland Drive, Castle Rock, Washington, Line Segment 052, Milepost 87.80. Sheet 429 - 6, undated.

Northern Pacific Engineering Drawing: Treated Timber Detail, Bridge 37+5205 - Waldrick Road, south of East Olympia, Washington, Line Segment 052, Milepost 37.99. Sheet 424 - 45, undated.

Northern Pacific Engineering Drawing: Treated Timber Detail, Bridge 104 - Nooksack River, north of Acme, Washington, Line Segment 403, Milepost 104.3. Sheet 444 - 1, undated.

Northern Pacific Engineering Drawing: Treated Timber Ballasted Deck, Bridge 104 - Nooksack River, north of Acme, Washington, Line Segment 403, Milepost 104.3. Sheet 444 - 1, undated.

Northern Pacific Engineering Drawing: Treated Pile Trestle, Bridge 23 - Ellingson Road, south of Auburn, Washington, Line Segment 051, Milepost 23.9. Sheet 677 - 30, undated.