Spokane, Portland and Seattle Railway Engineering Drawing: Voltage Check, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet 533 D844, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Vicinity of Map, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Vicinity of Map, Bridge E98.6 - Calapooia River, south of Albany, Oregon, Line Segment 442, Milepost 99.87. Sheet S - 4 - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Vicinity of Map, Bridge E71.8 - County Road, Salem, Oregon, Line Segment 442, Milepost 74.75, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Vicinity Map, Bridge T151.7 - Third Avenue, Bend, Oregon, Line Segment 053, Milepost 151.74. Sheet 2169A, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Vicinity Map, Bridge 10.7 - Columbia Street, Vancouver, Washington, Line Segment 047, Milepost 10.69. Sheet 362 - 8103, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Vicinity Map, Bridge 10.7 - Columbia Street, Vancouver, Washington, Line Segment 047, Milepost 10.69. Sheet 362 - 8103, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Viaduct, Bridge 265.8 - Burr Canyon, north of Burr, Washington, Line Segment 047, Milepost 265.8. Sheet B4183, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Viaduct, Bridge 265.8 - Burr Canyon, north of Burr, Washington, Line Segment 047, Milepost 265.8. Sheet B4183, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Viaduct, Bridge 265.8 - Burr Canyon, north of Burr, Washington, Line Segment 047, Milepost 265.8. Sheet B4183, undated.