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Spokane, Portland and Seattle Railway Engineering Drawing: Stringers, Frames, Struts, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 2 - 18 - 7, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringers and Laterals, Bridge 24.8 - Washougal River (West End), Camas, Washington, Line Segment 047, Milepost 24.75. Sheet AA - 427, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer/Portal/South End, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet Z - 5 - 5 - 5, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer/Floor Beam, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet Z - 5 - 4 - 6, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer, Frames, Top Strut, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 16 - 5, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer Replacement, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet NO 440 - A, 1968.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer Replacement, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet NO 434, 1964.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer Replace, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet NO 440, 1964.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer Replace, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet NO422, 1961.

Spokane, Portland and Seattle Railway Engineering Drawing: Stringer Replace, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet NO 433, 1964.