Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, 1948.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, 1946.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, 1939.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, 1938.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, 1937.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, 1927.

Northern Pacific Engineering Drawing: Tie Framing Plan, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Vertical Post, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 1076 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Top Brace, Bridge 6 - Chehalis River, Milburn, Washington, Line Segment 420, Milepost 6.93. Sheet 434 - 3, undated.