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: Telegraph Bracket Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet TV - 333, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Switch Box and Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 24, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Switch Board, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 2, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Swing Motor Gear, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 30, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Swing Motor Change, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 36, 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: 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: Stress Sheet, Bridge 5.8 - Willamette Boulevard, north of Willbridge, Oregon, Line Segment 047, Milepost 5.80. Sheet AA - 502, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stress Sheet, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 6 - 1, undated.