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Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Plan, Bridge E66.6 - Salem Parkway, south of Hopmere, Oregon, Line Segment 442, Milepost 66.60. Sheet 296 - 8431 - 16, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Plan, Bridge 8.8 - Oregon Slough, north of North Portland Junction, Oregon, Line Segment 047, Milepost 8.62. Sheet Z - 3 - 19 - 18, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Plan, 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 - Erection Plan, Bridge 10.7 - Columbia Street, Vancouver, Washington, Line Segment 047, Milepost 10.69. Sheet 381 - 8327 - 17, undated.

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

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Plan, Bridge 0.1 - north Portland Road, North Portland Junction, Oregon, Line Segment 047, Milepost 0.07. Sheet HA - 044, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Plan, Bridge 0.1 - north Portland Road, North Portland Junction, Oregon, Line Segment 047, Milepost 0.07. Sheet HA - 044, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Plan, Bridge 0.1 - north Portland Road, North Portland Junction, Oregon, Line Segment 047, Milepost 0.07, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Diagram, Bridge T88.6 - Trout Creek, south of South Junction, Oregon, Line Segment 053, Milepost 88.62, undated.