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Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Beam, Bridge E66.6 - Salem Parkway, south of Hopmere, Oregon, Line Segment 442, Milepost 66.60. Sheet 296 - 8431 - 26, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Beam, Bridge E66.6 - Salem Parkway, south of Hopmere, Oregon, Line Segment 442, Milepost 66.60. Sheet 296 - 8431 - 23, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bars, Pins, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 11 - 34, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bars, Pins, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 3 - 19 - 16, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bar, Pins, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 3 - 39, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Balance Chain, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet JK - 223 - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Angles, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet Z - 5 - 9 - 26, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Anchor Bolts, Bridge 304.4 - Cow Creek, north of Hooper, Washington, Line Segment 047, Milepost 304.4. Sheet 422 - 3, undated.