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Spokane, Portland and Seattle Railway Engineering Drawing: Foundation Data, Tunnel - Nehalem Boom Crossing, United Junction, Oregon, Line Segment 442, Milepost 10.19. Sheet 23283, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Foundation Data, Bridge E66.6 - Salem Parkway, south of Hopmere, Oregon, Line Segment 442, Milepost 66.60. Sheet 296 - 8431 - 3, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Forms for Arches, Bridge 84.9 - Klickitat River, east of Bingen, Washington, Line Segment 047, Milepost 84.86, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Footing/Wall Plan, Bridge 182.8 - Underpass, east of Plymouth, Washington, Line Segment 047, Milepost 192.80. Sheet ML - 192 - 8, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Footing Layout, Bridge 363.8 - Overhead Road, north of South Cheney, Washington, Line Segment 047, Milepost 363.8, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Fly Wheel Pans, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 13 - 28, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Fly Ball Switch, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 3 - 25 - 12, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Fly Ball Switch and Details, Bridge 5.1 - Willamette River, north of Willbridge, Oregon, Line Segment 047, Milepost 5.15. Sheet Z - 1 - 5 - 31, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Floorbeam, Bridge 10.8 - 26th Street, Vancouver, Washington, Line Segment 047, Milepost 10.78. Sheet 362 - 8103 - 8, undated.