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Spokane, Portland and Seattle Railway Engineering Drawing: Thrust Bearing, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 35, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Truss, Bridge E98.6 - Calapooia River, south of Albany, Oregon, Line Segment 442, Milepost 98.44. Sheet 194 - 1376 - 5, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Truss, Bridge E98.6 - Calapooia River, south of Albany, Oregon, Line Segment 442, Milepost 98.44, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Truss, Bridge E89.0 - Santiam River, Oregon, Line Segment 442, Milepost 98.44. Sheet 194 - 1376 - 6, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Span, Bridge 7.4 - Columbia Slough, north of East Saint Johns, Oregon, Line Segment 047, Milepost 7.40, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Span Bearings, Bridge T74.6 - Deschutes River, south of Dixon, Oregon, Line Segment 053, Milepost 74.65. Sheet Z - 7 - 21 - 7, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Plate Girder/Diagram of Types, Bridge A27.4 (159) - Milton Creek, Saint Helens, Oregon, Line Segment 440, Milepost 27.40, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Plate Girder, Bridge A27.4 (159) - Milton Creek, Saint Helens, Oregon, Line Segment 440, Milepost 27.40, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Plate Girder Spans, Bridge E126.9 - Willamette River, south of Harrisburg, Oregon, Line Segment 442, Milepost 125.99. Sheet WX - 116, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Through Plate Girder Span, Bridge T49.2 - White River, south of Sherar, Oregon, Line Segment 053, Milepost 49.20. Sheet Z - 6 - 16 - 3, undated.