Northern Pacific Engineering Drawing: Electric Work Power and Light, Bridge 71.5 - Station Subway, Spokane, Washington, Line Segment 045, Milepost 71.50. Sheet 1269 - 4, undated.

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

Northern Pacific Engineering Drawing: Electrical Operation, Bridge 53 - Willapa River, Raymond, Washington, Line Segment 420, Milepost 53.50. Sheet 429 - 1, undated.

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

Northern Pacific Engineering Drawing: Element Wiring Diagram Signal/Control, Bridge 1 - Columbia River, west of Pasco, Washington, Line Segment 048, Milepost 1.32. Sheet 290 - 1, undated.

Northern Pacific Engineering Drawing: Elevation Column Bents, Bridge 71 - Division Street, Spokane, Washington, Line Segment 045, Milepost 71.27. Sheet 1054 - 6, undated.

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

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

Northern Pacific Engineering Drawing: Elevation Near Truss, Bridge 100 (133) - Coweman River, south of Kelso, Washington, Line Segment 052, Milepost 100.2. Sheet 2009 - 1, undated.

Northern Pacific Engineering Drawing: Elevation New Permanent Bent, Bridge 72.2 - Hoquiam River, west of Aberdeen, Washington, Line Segment 402, Milepost 72.18. Sheet 770 - 5, undated.