Great Northern Engineering Drawing: Machinery Design 260 Foot, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 79, undated.

Great Northern Engineering Drawing: Machinery Housing, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 92, undated.

Great Northern Engineering Drawing: Masonry Plan, Bridge 11 - Steamboat Slough, north of Delta, Washington, Line Segment 050, Milepost 37.8. Sheet 200 - 1712 - 2, undated.

Great Northern Engineering Drawing: Masonry Plan, Bridge 11 - Steamboat Slough, north of Delta, Washington, Line Segment 050, Milepost 37.8. Sheet 200 - 1712 - 3, undated.

Great Northern Engineering Drawing: Mechanical Operating Wedge - Locks, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 95, undated.

Great Northern Engineering Drawing: north Sheer Boom, Bridge 10 - Snohomish River, north of Delta, Washington, Line Segment 050, Milepost 37.1. Sheet 197 - 2409 - 66, undated.