Great Northern Engineering Drawing: Cross Section at Bridge 36, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 12 - 822, undated.

Great Northern Engineering Drawing: Cross Section at Bridge 36, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 6 - 908, undated.

Great Northern Engineering Drawing: Deck Plan, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 200 - 1714 - 95, 1932.

Great Northern Engineering Drawing: Deck Plan, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 200 - 1714 - 102, 1953.

Great Northern Engineering Drawing: Deck Plan, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 200 - 1714 - 103, 1954.

Great Northern Engineering Drawing: Deck Plan, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 200 - 1714 - 104, 1956.

Great Northern Engineering Drawing: Detail Plan Granite Coping, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 200 - 1714 - 5, undated.

Great Northern Engineering Drawing: Falsework Plan, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 200 - 1714 - 7, undated.

Great Northern Engineering Drawing: General Detail Lining Device, Bridge 36 - Skagit River, north of Mount Vernon, Washington, Line Segment 050, Milepost 70.0. Sheet 200 - 1714 - 87, undated.