Northern Pacific Engineering Drawing: Extension Concrete Box, Culvert, Near Rapids, Montana, Line Segment 041, Milepost 30.8. Sheet 446 - 49, 1960.

Northern Pacific Engineering Drawing: Extension of Culvert, Culvert south of Empire, west of Empire, Washington, Line Segment 046, Milepost 4.34. Sheet 442 - 59, undated.

Northern Pacific Engineering Drawing: Extension to Culvert, Culvert, Near Frenchtown, Montana, Line Segment 042, Milepost 144.4. Sheet 1267 - 7, 1944.

Northern Pacific Engineering Drawing: Extension to Culvert, Culvert, Near Frenchtown, Montana, Line Segment 042, Milepost 144.4. Sheet 1267 - 7, 1944.

Northern Pacific Engineering Drawing: Fill - 10 Foot X 12 Foot Pier, Culvert (Old Number 99), Near Kelso, Washington, Line Segment 052, Milepost 99.1. Sheet 388 - 8763 - 1, undated.

Northern Pacific Engineering Drawing: Foundation Details, Track Scale, Auburn, Washington, Line Segment 051. Sheet 1274 - 19, undated.

Northern Pacific Engineering Drawing: Foundation Plan, Track Scale, Everett, Washington, Line Segment 408. Sheet 190 - 2885, undated.

Northern Pacific Engineering Drawing: General Installation Notes, Track Scale, Centralia, Washington, Line Segment 052. Sheet 364 - 8498, undated.

Northern Pacific Engineering Drawing: General Plan and Pile Layout, Scale Head - Of - Bay Yard Tacoma, Tacoma, Washington, Line Segment 051. Sheet 364 - 8073 - 1, undated.

Northern Pacific Engineering Drawing: General Plan Concrete Box, Culvert, Near Ketron, Washington, Line Segment 052, Milepost 20.84. Sheet 1063 - 2, undated.