Northern Pacific Engineering Drawing: Plan - Dolphins, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6. Sheet 1080 - 8, 1935.

Northern Pacific Engineering Drawing: Plan of Piling, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6, undated.

Northern Pacific Engineering Drawing: Plan of Piling, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6, undated.

Northern Pacific Engineering Drawing: Plan of Piling, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6, undated.

Northern Pacific Engineering Drawing: Plan of Piling, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6, undated.

Northern Pacific Engineering Drawing: Plan of Piling, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6, undated.

Northern Pacific Engineering Drawing: Prestressed Concrete Cap, Bridge 102 - Owl Creek, south of Longview Junction, Washington, Line Segment 052, Milepost 102.2. Sheet 388 - 8756, undated.

Northern Pacific Engineering Drawing: Prestressed Concrete "T" Girder, Bridge 102 - Owl Creek, south of Longview Junction, Washington, Line Segment 052, Milepost 102.2. Sheet 388 - 8756, undated.

Northern Pacific Engineering Drawing: Prestressed Concrete "T" Girder, Bridge 102 - Owl Creek, south of Longview Junction, Washington, Line Segment 052, Milepost 102.2. Sheet 388 - 8756, undated.