Northern Pacific Engineering Drawing: Arrangement and Details, Bridge 32 - Skookumchuck Rr, south of Wetico, Washington, Line Segment 400, Milepost 32.6. Sheet 1068 - 18, undated.

Northern Pacific Engineering Drawing: Permanent Timber Construction, Bridge 32 - Skookumchuck Rr, south of Wetico, Washington, Line Segment 400, Milepost 32.6. Sheet 1068 - 18, undated.

Northern Pacific Engineering Drawing: Steel Detail/Deck Material, Bridge 32 - Skookumchuck Rr, south of Wetico, Washington, Line Segment 400, Milepost 32.6. Sheet 1068 - 18, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 32 - Skookumchuck Rr, south of Wetico, Washington, Line Segment 400, Milepost 32.6. Sheet, 1946.