Northern Pacific Engineering Drawing: Walk Details and Bill of Material, Bridge 93.2 - west Stock Road, south of Castle Rock, Washington, Line Segment 052, Milepost 93.5. Sheet 390 - 8496 - 4, undated.

Northern Pacific Engineering Drawing: Walk Details and Bill of Material, Bridge 82, south of Paha, Washington, Line Segment 046, Milepost 82.64. Sheet 388 - 8494 - 3, undated.

Northern Pacific Engineering Drawing: Walk Details and Bill of Material, Bridge 36 - Pattison Lake, south of Kyro, Washington, Line Segment 052, Milepost 31.6. Sheet 390 - 8679 - 4, undated.

Northern Pacific Engineering Drawing: Walk Details and Bill of Material, Bridge 27 - Salmon Creek, south of Auburn, Washington, Line Segment 051, Milepost 27.6. Sheet 390 - 8681 - 5, undated.

Northern Pacific Engineering Drawing: Walk Details and Bill of Material, Bridge 129 - Esquatzel Coulee, Eltopia, Washington, Line Segment 046, Milepost 129.46. Sheet 388 - 8495 - 3, undated.

Northern Pacific Engineering Drawing: Walk Details and Bill of Material, Bridge 108, west of Cunningham, Washington, Line Segment 046, Milepost 108.61. Sheet 388 - 8682 - 3, undated.