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Spokane, Portland and Seattle Railway Engineering Drawing: Substructure Plan, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Substructure as Built, Bridge E98.6 - Calapooia River, south of Albany, Oregon, Line Segment 442, Milepost 99.87. Sheet WX - 112, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Sub - Base, Engine and Generator, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 15, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Strut, Crank, Bearing, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 3 - 22 - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Structural Steel, Bridge 336.1 - Highway Undercrossing, north of Lamont, Washington, Line Segment 047, Milepost 336.1. Sheet NO - 253E, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Structural Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 5, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Structural and Highway Plans, Bridge 0.1 - north Portland Road, North Portland Junction, Oregon, Line Segment 047, Milepost 0.07. Sheet 256 - 6778 - 1, undated.