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Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Cam Diagram, 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 - Cam Diagram, 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 - Cam Diagram, 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 - Cam Diagram, 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 - Cam Diagram, 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 - Cam Diagram, 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 - CA - Tower, Bridge T0.4 - Columbia River, south of Wishram, Washington, Line Segment 053, Milepost 0.37. Sheet JK - 219 - 8, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bridge Bear, Bridge 47.5 - Access Road, east of Skamania, Washington, Line Segment 047, Milepost 47.46. Sheet 315 - 6991 - 12, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bridge Beam, Bridge 47.5 - Access Road, east of Skamania, Washington, Line Segment 047, Milepost 47.46. Sheet 315 - 6991 - 10, undated.