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Spokane, Portland and Seattle Railway Engineering Drawing: Piers, 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: Piers, 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: Piers, Abutments, Slabs, Bridge 17.3 - Loves Lake, east of McLaughlin, Washington, Line Segment 047, Milepost 17.27. Sheet NO - 221, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers Number 2 and 3, Bridge 336.1 - Highway Undercrossing, north of Lamont, Washington, Line Segment 047, Milepost 336.1. Sheet NO - 253C, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers Number 1 and 2, Bridge 174.9 - Glade Creek, east of Whitcomb, Washington, Line Segment 047, Milepost 174.91. Sheet JDR - 1 - 4 - 11/72, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers Number 1 and 2, Bridge 174.9 - Glade Creek, east of Whitcomb, Washington, Line Segment 047, Milepost 174.91. Sheet JDR - 1 - 4 - 11/76, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers Number 1 and 2, Bridge 167.9 - Dead Canyon, east of McCredie, Washington, Line Segment 047, Milepost 167.92. Sheet 1 - 4 - 11/44A, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers Number 1 and 2, Bridge 161.8 - Alder Creek, east of McCredie, Washington, Line Segment 047, Milepost 161.79. Sheet JDR - 1 - 4 - 11/21, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers I/IV, Bridge T44.0 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.94. Sheet RR - 534B, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Piers I and II, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65. Sheet RR - 533B, undated.