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Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 66.4 - Little White Salmon River, east of Cooks, Washington, Line Segment 047, Milepost 66.32. Sheet NO - 288, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 66.4 - Little White Salmon River, east of Cooks, Washington, Line Segment 047, Milepost 66.32. Sheet NO - 288A, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 54.2 - Kanaka Creek - Tie Plan, North Bonneville, Washington, Line Segment 047, Milepost 54.21. Sheet, 1969. Note: Steel span

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet TV - 239B, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 47.0 - Hamilton Creek, east of Skamania, Washington, Line Segment 047, Milepost 47.02. Sheet R - 2 - 23, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 44.3 - Woodard Creek, east of Skamania, Washington, Line Segment 047, Milepost 44.30. Sheet NO 390, 1965.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 44.3 - Woodard Creek, east of Skamania, Washington, Line Segment 047, Milepost 44.30. Sheet CC - 525A, 1944.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 42.7 - Duncan Creek, east of Skamania, Washington, Line Segment 047, Milepost 42.67. Sheet CC - 517A, 1944.