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Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet B3751, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 7.4 - Columbia Slough, north of East Saint Johns, Oregon, Line Segment 047, Milepost 7.40. Sheet C4524, undated.

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

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 4 - 18, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 4 - 19, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 4 - 21, undated.

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

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 4 - 20, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 304.4 - Cow Creek, north of Hooper, Washington, Line Segment 047, Milepost 304.4. Sheet 422 - 3, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 304.4 - Cow Creek, north of Hooper, Washington, Line Segment 047, Milepost 304.4. Sheet 422 - 3, undated.