Spokane, Portland and Seattle Railway Engineering Drawing: Topographic Map, Bridge 31.3 - Hathaway Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet N - 1 - 7, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Frame Plan, Bridge 31.3 - Hathaway Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet 00 - 627, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shims for Girder, Bridge 31.3 - Hathaway Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet CC - 513, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Proposed Channel Pathway Check, Bridge 31.3 - Hathaway Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet N - 1 - 7, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Proposed Abutments, Bridge 31.3 - Hathaway Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet N - 1 - 7, 1908.

Spokane, Portland and Seattle Railway Engineering Drawing: Plat of Channel Change, Bridge 31.3 - Hathaway Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet N - 1 - 7, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Plan of Abutments, Bridge 31.3 - Hathaway Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet N - 1 - 7, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Deck Plate Girder (DPG) Span, Bridge 31.3 - Woodard Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet 444 - 27, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Deck Plate Girder (DPG) Span, Bridge 31.3 - Hathaway Creek, east of Washougal, Washington, Line Segment 047, Milepost 31.32. Sheet B7690A, undated.