Spokane, Portland and Seattle Railway Engineering Drawing: Proposed Change, Bridge 24.8 - Washougal River (West End), Camas, Washington, Line Segment 047, Milepost 24.75. Sheet AA - 418, 1911.

Spokane, Portland and Seattle Railway Engineering Drawing: Retaining Wall, Bridge 24.2 - Camas Tramway, Camas, Washington, Line Segment 047, Milepost 24.21. Sheet 00 - 646, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Retaining Wall, Bridge 24.2 - Camas Tramway, Camas, Washington, Line Segment 047, Milepost 24.21. Sheet NO - 270 A, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Steel Sheet Piling, Bridge 24.8 - Washougal River (West End), Camas, Washington, Line Segment 047, Milepost 24.75. Sheet NN - 263, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Steel Shims, Bridge 24.8 - Washougal River (West End), Camas, Washington, Line Segment 047, Milepost 24.75. Sheet SS - 616, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stress Diagram, Bridge 24.8 - Washougal River (West End), Camas, Washington, Line Segment 047, Milepost 24.75. Sheet AA - 424, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer Laterals and Gusset Plate, Bridge 24.8 - Washougal River (West End), Camas, Washington, Line Segment 047, Milepost 24.75. Sheet SS - 606, undated.