Northern Pacific Engineering Drawing: Alter 32 Foot Span, Bridge 0 - Clark Fork River, north of Phosphate, Montana, Line Segment 368, Milepost 0.06. Sheet 1268 - 26, 1955.

Northern Pacific Engineering Drawing: Alter Expansion End Stringer, Bridge 207 - Clark Fork River, west of Donlan, Montana, Line Segment 042, Milepost 207.6. Sheet 775 - 5, undated.

Northern Pacific Engineering Drawing: Alteration of Beam Span, Bridge 51 - Hannaford Creek, south of Wabash, Washington, Line Segment 052, Milepost 51.9. Sheet 443 - 26, undated.

Northern Pacific Engineering Drawing: Alteration of Beam Span, Bridge 51 - Hannaford Creek, south of Wabash, Washington, Line Segment 052, Milepost 51.9. Sheet 443 - 26, undated.

Northern Pacific Engineering Drawing: Alternative Abutment to Reinforcement, Bridge 9 (268) - Concoma Creek, west of Plains, Montana, Line Segment 044, Milepost 9.0. Sheet 441 - 37, undated.

Northern Pacific Engineering Drawing: Aluminum Handrail, Bridge 29.16 - Highway 410, Sumner, Washington, Line Segment 051, Milepost 29.3. Sheet 1276 - 6, undated.

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

Northern Pacific Engineering Drawing: Anchor Bolt Plan, Bridge 1 - Columbia River, west of Pasco, Washington, Line Segment 048, Milepost 1.32. Sheet 358 - 7047 - B, undated.