Spokane, Portland and Seattle Railway Engineering Drawing: Pile Plan/General Plan, Bridge E78.8 - Underpass, south of Minto, Oregon, Line Segment 442, Milepost 78.76. Sheet WX - 194, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Pile Piers, Bridge A51.3 - Rinearson Slough, west of Reichhold, Oregon, Line Segment 440, Milepost 51.30. Sheet NN - 300, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Pile Piers, Bridge A51.3 - Rinearson Slough, west of Reichhold, Oregon, Line Segment 440, Milepost 51.30. Sheet NN - 299, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers/South Abutment, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65. Sheet Z - 6 - 13 - 14, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers/Falsework, Bridge E35.3 - Tualatin River, south of Tigard, Oregon, Line Segment 442, Milepost 35.21. Sheet WX - 147, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers/Falsework, Bridge E35.3 - Tualatin River, south of Tigard, Oregon, Line Segment 442, Milepost 35.21. Sheet WX - 143, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers/Abutments, Bridge E20.1 - Highway 26, south of Bowers Junction, Oregon, Line Segment 442, Milepost 22.09. Sheet WX - 172, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers/Abutment, Bridge T44.0 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.94. Sheet Z - 6 - 13 - 16, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers, Bridge F5.7 - Dairy Creek, west of Hillsboro, Oregon, Line Segment 458, Milepost 5.65. Sheet SS - 422, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers, Bridge E26.2 - Beaverton Creek, west of Saint Helens, Oregon, Line Segment 442, Milepost 26.21. Sheet 387 - 8389, undated.