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: Waste Boxes, Bridge 6.2 - Lombard Street, north of Willbridge, Oregon, Line Segment 047, Milepost 6.20. Sheet NN - 294, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: U8 Connection Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet 231 - 7065 - 12, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Turntable Bearing and Beams, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 1 - 8, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Turntable and Radial Beams, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 1 - 10, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Turning Shaft Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 2 - 20, undated.