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

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

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

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

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

Northern Pacific Engineering Drawing: Reinforcement Floor System, Bridge 38 - Willapa River, west of Labam, Washington, Line Segment 420, Milepost 38.82. Sheet 1076 - 1, 1912.

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