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Spokane, Portland and Seattle Railway Engineering Drawing: Stress Sheet, Bridge 270.0 - Box Canyon, north of Farrington, Washington, Line Segment 047, Milepost 270.0, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stress Sheet, Bridge 269.1 - Wilson Canyon, Farrington, Washington, Line Segment 047, Milepost 269.1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stress Sheet, Bridge 267.6 - Bouvey Canyon, Windust, Washington, Line Segment 047, Milepost 267.6. Sheet N - 4 - 10, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stress Sheet, Bridge 267.6 - Bouvey Canyon, Windust, Washington, Line Segment 047, Milepost 267.6. Sheet N - 4 - 10, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stress Sheet, Bridge 265.8 - Burr Canyon, north of Burr, Washington, Line Segment 047, Milepost 265.8. Sheet N - 4 - 9, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stress Sheet, Bridge 265.8 - Burr Canyon, north of Burr, Washington, Line Segment 047, Milepost 265.8. Sheet 265 - 8, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stress Diagram, Bridge E35.3 - Tualatin River, south of Tigard, Oregon, Line Segment 442, Milepost 35.21, 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: Stop Extension, Bridge 17.3 - Loves Lake, east of McLaughlin, Washington, Line Segment 047, Milepost 17.27. Sheet 00 - 226, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Steel Wedge, Bridge 322.3 - Chicago, Milwaukee, St. Paul & Pacific Crossing, north of Lantz, Washington, Line Segment 047, Milepost 322.3. Sheet SS513, undated.