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

Northern Pacific Engineering Drawing: Mag Control/Main Control, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6, undated.

Northern Pacific Engineering Drawing: Main Line, Bridge 105 - Kalama River, south of Longview Junction, Washington, Line Segment 052, Milepost 105.6. Sheet 429 - 16, undated.

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

Northern Pacific Engineering Drawing: New End Bearings, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6. Sheet, 1928.

Northern Pacific Engineering Drawing: New Lateral, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6. Sheet 57547, undated.

Northern Pacific Engineering Drawing: Out Elevation Near Truss, Bridge 105 - Kalama River, south of Longview Junction, Washington, Line Segment 052, Milepost 105.6. Sheet 429 - 16, undated.

Northern Pacific Engineering Drawing: Pile Trestle and Walk, Bridge 0.59 - Cowlitz River, Longview Junction, Washington, Line Segment 613, Milepost 0.6. Sheet 1080 - 8, undated.