Northern Pacific Engineering Drawing: Shop Plan - Roller Bed, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Roller, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Sheet Lead, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Shoe Casting, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Shop Plan - Shoe Casting, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, 1959.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 70 - Olequa Creek, south of Napavine, Washington, Line Segment 052, Milepost 70.5. Sheet 429 - 4, 1961.