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Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Diagram, Bridge S - 31.3 - Wylie Creek, Foster, Oregon, Line Segment 457, Milepost 31.29. Sheet P - 3 - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Diagram, 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 - Erection Diagram, Bridge E89.0 - Santiam River, south of Sidney, Oregon, Line Segment 442, Milepost 88.55. Sheet WX - 110, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Diagram, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 3 - 23 - 30, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Diagram, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 3 - 24 - 12, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Diagram, Bridge 58.8 - Wind River, east of Stevenson, Washington, Line Segment 047, Milepost 58.74. Sheet JK - 324, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Diagram, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 7 - 23, undated.

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