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Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post/Chord, Bridge E35.3 - Tualatin River, south of Tigard, Oregon, Line Segment 442, Milepost 35.21. Sheet 215 - 1314, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 11 - 13, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 11 - 18, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 11 - 19, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 7 - 6, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 7 - 7, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 3 - 13, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 3 - 14, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 3 - 15, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Post Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 7 - 8, undated.