Great Northern Engineering Drawing: Piling Plan, Bridge 11 - Steamboat Slough, north of Delta, Washington, Line Segment 050, Milepost 37.8. Sheet 200 - 1712 - 58, undated.

Great Northern Engineering Drawing: Plan and Profile, Bridge 11 - Steamboat Slough, north of Delta, Washington, Line Segment 050, Milepost 37.8. Sheet 1 - 916, undated.

Great Northern Engineering Drawing: Plan of Granite Coping, Bridge 11 - Steamboat Slough, north of Delta, Washington, Line Segment 050, Milepost 37.8. Sheet 200 - 1712 - 5, undated.

Great Northern Engineering Drawing: Plan Piping - 260 Foot Drawspan, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 85, undated.

Great Northern Engineering Drawing: Precast Concrete Details, Bridge 10.5 - Union Slough, north of Delta, Washington, Line Segment 050, Milepost 37.6. Sheet 197 - 3237 - 4, undated.

Great Northern Engineering Drawing: Rack Anchorage, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 174, undated.

Great Northern Engineering Drawing: Renewal of Center Casting, Bridge 11 - Steamboat Slough, north of Delta, Washington, Line Segment 050, Milepost 37.8. Sheet 200 - 1712 - 30, 1915.