Northern Pacific Engineering Drawing: Through Plate Girder Span, Bridge 87 (139) - Hell Gate River, west of Bearmouth, Montana, Line Segment 042, Milepost 87.2. Sheet 775 - 24, undated.

Northern Pacific Engineering Drawing: Through Plate Girder Span, Bridge 87 (139) - Hell Gate River, west of Bearmouth, Montana, Line Segment 042, Milepost 87.2. Sheet 775 - 24, undated.

Northern Pacific Engineering Drawing: Through Plate 7 Double Truss, Bridge 29 - Thompson Avenue, Sumner, Washington, Line Segment 051, Milepost 29.2. Sheet 1067 - 7, undated.

Northern Pacific Engineering Drawing: Through Lateral Girder, Bridge 2 - Chehalis River, Washington, Line Segment 420, Milepost 2.60. Sheet 750 - 10, undated.

Northern Pacific Engineering Drawing: Through Lateral Girder, Bridge 2 - Chehalis River, Washington, Line Segment 420, Milepost 2.60. Sheet 750 - 10, undated.

Northern Pacific Engineering Drawing: Through Lateral Girder, Bridge 2 - Chehalis River, Washington, Line Segment 420, Milepost 2.60. Sheet 750 - 10, undated.

Northern Pacific Engineering Drawing: Test Holes, Bridge 9.46 - I-90, south of Wilburton, Washington, Line Segment 405, Milepost 9.9. Sheet 1282 - 5, undated.

Northern Pacific Engineering Drawing: Test Holes, Bridge 9.46 - I-90, south of Wilburton, Washington, Line Segment 405, Milepost 9.9. Sheet 2034 - 1, undated.

Northern Pacific Engineering Drawing: Terminal Box and Cable Layout, Bridge 3 - Snake River, east of Ainsworth Junction, Washington, Line Segment 450, Milepost 3.05. Sheet 359 - 6739 - 53, undated.

Northern Pacific Engineering Drawing: Temporary Pile Bridge, Bridge 127 - Highway, west of De Smet, Montana, Line Segment 042, Milepost 127.1. Sheet 1071 - 7, undated.