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

Spokane, Portland and Seattle Railway Engineering Drawing: General Section and Elevation, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 6 - 2, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: General View U8 L10, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet 231 - 7065 - 13, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Girder Sketch, Bridge 5.7 - Union Pacific Railroad, north of Willbridge, Oregon, Line Segment 047, Milepost 5.73. Sheet, 1909.

Spokane, Portland and Seattle Railway Engineering Drawing: Girders, Frames and Shoes, 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: Guard Angle Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 8 - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Hand Operate Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 2 - 25, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Hand Turn Device, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 2 - 26, undated.