Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Turn Machinery, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 3 - 24 - 6, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Trusses, Bridge T44.0 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.94. Sheet Z - 6 - 15 - 9, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Trusses, Bridge 291.4 - Oregon - Washington Railroad and Navigation Company Crossing, Washtucna, Washington, Line Segment 047, Milepost 291.4. Sheet 0 - 4 - 15, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Trusses, Bridge 291.4 - Oregon - Washington Railroad and Navigation Company Crossing, Washtucna, Washington, Line Segment 047, Milepost 291.4. Sheet 0 - 4 - 15, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Trusses, Bridge 291.4 - Oregon - Washington Railroad and Navigation Company Crossing, Washtucna, Washington, Line Segment 047, Milepost 291.4. Sheet 0 - 4 - 15, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Truss, Bridge S - 31.3 - Wylie Creek, Foster, Oregon, Line Segment 457, Milepost 31.29. Sheet P - 3 - 1, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Truss Vertical, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 71, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Truss Vertical, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 7, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Truss Section, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 75, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Truss Section, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 74, undated.