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Spokane, Portland and Seattle Railway Engineering Drawing: Special Nuts, Bridge 66.4 - Little White Salmon River, east of Cooks, Washington, Line Segment 047, Milepost 66.32. Sheet NN - 192, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Spans/Plate/Bottom Lights, Bridge A97.8 - Columbia River, Astoria, Oregon, Line Segment 440, Milepost 97.77. Sheet NO - 266, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Span Swing Motors, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 13 - 5, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Span Swing Motors, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 13 - 6, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Span Swing Motors, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 12, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Span Steel Ties, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet AFE - S34 - 69, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Span Guide/Lower Tower, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet WX - 208, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: south Tower Lower Section, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet WX - 208, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: south Tower Center Section, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet WX - 208, undated.