Northern Pacific Engineering Drawing: Turntable Girders, Bridge 36 - Chico Creek, north of Naval Ammunition Depot Junction, Washington, Line Segment 426, Milepost 36.35. Sheet 1261 - 4, undated.

Northern Pacific Engineering Drawing: Structure Piling Plan, Bridge 1 - Heins Creek, west of Naval Ammunition Depot Junction, Washington, Line Segment 427, Milepost 1.96. Sheet 1261 - 4A, undated.

Northern Pacific Engineering Drawing: Structure Deck Details, Bridge 1 - Heins Creek, west of Naval Ammunition Depot Junction, Washington, Line Segment 427, Milepost 1.96. Sheet 1261 - 4A, undated.

Northern Pacific Engineering Drawing: Shop Plan - Proposed Repairs, Bridge 36 - Chico Creek, north of Naval Ammunition Depot Junction, Washington, Line Segment 426, Milepost 36.35. Sheet 1261 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Proposed Repairs, Bridge 36 - Chico Creek, north of Naval Ammunition Depot Junction, Washington, Line Segment 426, Milepost 36.35. Sheet 1261 - 4, undated.

Northern Pacific Engineering Drawing: Rebuild Bridge, Bridge 36 - Chico Creek, north of Naval Ammunition Depot Junction, Washington, Line Segment 426, Milepost 36.35. Sheet 1261 - 4, 1961.

Northern Pacific Engineering Drawing: Proposed Support, Bridge 36 - Chico Creek, north of Naval Ammunition Depot Junction, Washington, Line Segment 426, Milepost 36.35. Sheet 1261 - 4, undated.