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Spokane, Portland and Seattle Railway Engineering Drawing: Old east Abutment, Bridge 66.4 - Little White Salmon River, east of Cooks, Washington, Line Segment 047, Milepost 66.32. Sheet NN - 191, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: north Approach/General Plan, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet Z - 5 - 2 - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: north Abutment, Bridge T44.0 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.94. Sheet RR - 534A, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: north Abutment, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65. Sheet Z - 6 - 13 - 15, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: north Abutment, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65. Sheet RR - 533A, undated.