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Spokane, Portland and Seattle Railway Engineering Drawing: Motor Gears, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 13 - 3, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Motor Gear Drive Detail, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 32, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Motor Gear Drive Detail, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 33, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Motor Gear Drive Detail, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 34, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Motor and Machinery Supports, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 3 - 25 - 2, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Motor and Brake Supports, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 10, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Moment Diagram Standard Load, Bridge Standard Plan. Sheet AA - 127, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Modification for Erection, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet Z - 5 - 5 - 8, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Miscellaneous/Bill of Material, Bridge E35.3 - Tualatin River, south of Tigard, Oregon, Line Segment 442, Milepost 35.21. Sheet WX - 146, undated.