Spokane, Portland and Seattle Railway Engineering Drawing: Framing Detail, Bridge 29.5 Public Oh, west of Saint Helens, Oregon, Line Segment 440. Sheet TV268 - B, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Exterior Box Girder, Bridge E26.2 - Beaverton Creek, west of Saint Helens, Oregon, Line Segment 442, Milepost 26.55. Sheet 387 - 8422, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: End Bearings, Bridge A27.4 (159) - Milton Creek, Saint Helens, Oregon, Line Segment 440, Milepost 27.40, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Detail of Steel, Bridge A26.5 (164?) - (No Suggestions) Creek, west of Saint Helens, Oregon, Line Segment 440, Milepost 26.51. Sheet NO - 268, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Cap Frame Detail, Bridge 29.5 Public Oh, west of Saint Helens, Oregon, Line Segment 440. Sheet TV268 - B, undated.

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

Spokane, Portland and Seattle Railway Engineering Drawing: Bill of Material, Bridge 29.5 Public Oh, west of Saint Helens, Oregon, Line Segment 440. Sheet TV268 - B, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Abutment Details, Bridge A26.5 (164?) - (No Suggestions) Creek, west of Saint Helens, Oregon, Line Segment 440, Milepost 26.51. Sheet NO - 267, undated.