Spokane, Portland and Seattle Railway Engineering Drawing: Wiring Diagram/Torque Curve, Bridge E126.9 - Willamette River, south of Harrisburg, Oregon, Line Segment 442, Milepost 125.99. Sheet V - 4 - 5, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Wiring Diagram Switchboard Lights/Motor, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 27, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Wiring Diagram Rail Lock/Motor, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 26, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Wiring Diagram End Lift Motor, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet DW - EB100W - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Wheel Brackets/Casting Box, Bridge A62.7 - Clatskanie River, west of Clatskanie, Oregon, Line Segment 440, Milepost 62.67, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Wheel Bracket and Boxes, Bridge A84.8 - Blind Slough, west of Clifton, Oregon, Line Segment 440, Milepost 84.71, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: west Flange Deck Girder, Bridge E81.4 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 81.41, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: west Flange Deck Girder, Bridge E81.4 - Underpass, south of Orville, Oregon, Line Segment 442, Milepost 81.41, undated.