Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet Z - 5 - 10 - 22, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet Z - 5 - 9 - 12, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge E89.0 - Santiam River, south of Sidney, Oregon, Line Segment 442, Milepost 88.55. Sheet M - 8 - 15, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 65, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 69, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge E43.4 - Willamette River, south of Tualatin, Oregon, Line Segment 442, Milepost 43.24. Sheet 370 - 6592 - 64, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 11 - 24, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 11 - 25, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 11 - 23, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bottom Lateral, Bridge 72.8 - White Salmon River, east of Hood, Washington, Line Segment 047, Milepost 72.80. Sheet JK - 318, undated.