Northern Pacific Engineering Drawing: Tunnels - 120 Foot Span, Bridge 38 - Willapa River, west of Labam, Washington, Line Segment 420, Milepost 38.82. Sheet R - 10 - 177, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 40 - Fork Prairie Creek, west of Labam, Washington, Line Segment 420, Milepost 40.33. Sheet 1076 - 2, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 40 - Fork Prairie Creek, west of Labam, Washington, Line Segment 420, Milepost 40.33. Sheet 1076 - 2, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 38 - Willapa River, west of Labam, Washington, Line Segment 420, Milepost 38.82, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 38 - Willapa River, west of Labam, Washington, Line Segment 420, Milepost 38.82. Sheet 1076 - 1, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 35 - Fern Creek, west of Labam, Washington, Line Segment 420, Milepost 35.66. Sheet 1076 - 3, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 35 - Fern Creek, west of Labam, Washington, Line Segment 420, Milepost 35.66. Sheet 1076 - 3, 1937.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 35 - Fern Creek, west of Labam, Washington, Line Segment 420, Milepost 35.66. Sheet 1076 - 3, 1928.

Northern Pacific Engineering Drawing: Steel Details - 120 Foot Truss, Bridge 38 - Willapa River, west of Labam, Washington, Line Segment 420, Milepost 38.82. Sheet VF 1076 - 1, undated.

Northern Pacific Engineering Drawing: Standard Plan - 120 Foot Span, Bridge 38 - Willapa River, west of Labam, Washington, Line Segment 420, Milepost 38.82. Sheet R.10 - 177A, undated.