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Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Truss Diagonal, Bridge E89.0 - Santiam River, south of Sidney, Oregon, Line Segment 442, Milepost 88.55. Sheet M - 8 - 15, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Truss Diagonal, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 66, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Trunnions/ Braces, Bridge 270.0 - Box Canyon, north of Farrington, Washington, Line Segment 047, Milepost 270.0. Sheet 422 - 4, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Trestle, Bridge A28.1S - Milton Creek, west of Saint Helens, Oregon, Line Segment 440. Sheet N - 1 - 13, 1931. Note: Pile trestle

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Transverse Stringer, Bridge 269.1 - Wilson Canyon, Farrington, Washington, Line Segment 047, Milepost 269.1. Sheet 777 - 3, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Transverse Diagonal and Verticals, Bridge 269.1 - Wilson Canyon, Farrington, Washington, Line Segment 047, Milepost 269.1. Sheet 777 - 3, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Transverse Braces, Bridge 269.1 - Wilson Canyon, Farrington, Washington, Line Segment 047, Milepost 269.1. Sheet 777 - 3, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Transverse Braces, Bridge 267.6 - Bouvey Canyon, Windust, Washington, Line Segment 047, Milepost 267.6. Sheet 777 - 2, undated.