Northern Pacific Engineering Drawing: Tie Plan, Bridge 33.1 - Chehalis Western Railroad, south of Saint Clair, Washington, Line Segment 052, Milepost 33.7. Sheet 1068 - 17, 1950.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 33.1 - Chehalis Western Railroad, south of Saint Clair, Washington, Line Segment 052, Milepost 33.7. Sheet 1068 - 17, 1950.

Northern Pacific Engineering Drawing: Steel Detail/Deck Material, Bridge 33.1 - Chehalis Western Railroad, south of Saint Clair, Washington, Line Segment 052, Milepost 33.7. Sheet 1068 - 17, undated.

Northern Pacific Engineering Drawing: Permanent Timber Construction, Bridge 33.1 - Chehalis Western Railroad, south of Saint Clair, Washington, Line Segment 052, Milepost 33.7. Sheet 1068 - 17, undated.

Northern Pacific Engineering Drawing: Falsework, Bridge 33.1 - Chehalis Western Railroad, south of Saint Clair, Washington, Line Segment 052, Milepost 33.7. Sheet 1068 - 17, 1927.

Burlington Northern Engineering Drawing: Deck Plan, Bridge 33.1 - Chehalis Western Railroad (formerly Northern Pacific), south of Saint Clair, Washington, Line Segment 052, Milepost 33.7. Sheet 1068 - 17, 1977.