Northern Pacific Engineering Drawing: Top Lateral Bracing, Bridge 4 - Walla Walla River, Zangar Junction, Washington, Line Segment 451, Milepost 4.45. Sheet 772 - 2, undated.

Northern Pacific Engineering Drawing: Top Chord, Bridge 17.2 - White River, south of Kent, Washington, Line Segment 051, Milepost 17.7. Sheet 433 - 25, undated.

Northern Pacific Engineering Drawing: Top Chord, Bridge 17.2 - White River, south of Kent, Washington, Line Segment 051, Milepost 17.7. Sheet 433 - 25, undated.

Northern Pacific Engineering Drawing: Top Chord, Bridge 1 - Columbia River, west of Pasco, Washington, Line Segment 048, Milepost 1.32. Sheet 770 - 1, undated.

Northern Pacific Engineering Drawing: Title Sheet, Bridge 3 - Snake River, east of Ainsworth Junction, Washington, Line Segment 450, Milepost 3.05. Sheet 772 - 3A, undated.

Northern Pacific Engineering Drawing: Title Sheet, Bridge 23 - Ellingson Road, south of Auburn, Washington, Line Segment 051, Milepost 23.9. Sheet 677 - 30, undated.

Northern Pacific Engineering Drawing: Title Sheet, Bridge 176 - Highway I-90, Westfall, Montana, Line Segment 042, Milepost 176.9. Sheet 2015 - 5, undated.

Northern Pacific Engineering Drawing: Title Sheet, Bridge 1 - Columbia River, west of Pasco, Washington, Line Segment 048, Milepost 1.32. Sheet 290 - 1, undated.

Northern Pacific Engineering Drawing: Title Sheet, Bridge 1 - Columbia River, west of Pasco, Washington, Line Segment 048, Milepost 1.32. Sheet 290 - 1, undated.

Northern Pacific Engineering Drawing: Timber Protection, Bridge 1 - Columbia River, west of Pasco, Washington, Line Segment 048, Milepost 1.32. Sheet 290 - 1, undated.