Spokane, Portland and Seattle Railway Engineering Drawing: Transformer Platform Details, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 14 - 9, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Transformer House, Bridge 9.6 - Columbia River, Vancouver, Washington, Line Segment 047, Milepost 9.31. Sheet Z - 2 - 13 - 30, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Track Stringers, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Track Stringers and Struts, Bridge A84.8 - Blind Slough, west of Clifton, Oregon, Line Segment 440, Milepost 84.71, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Track for Traveler, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet Z - 5 - 6 - 4, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Track Details, Bridge T74.6 - Deschutes River, south of Dixon, Oregon, Line Segment 053, Milepost 74.65. Sheet Z - 5 - 6 - 6, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Towers for Telegraph, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet NO - 302, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tower Stress Sheet, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet WX - 208, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tower Spans - Girders, Bridge 270.0 - Box Canyon, north of Farrington, Washington, Line Segment 047, Milepost 270.0, undated.