Northern Pacific Engineering Drawing: Retaining Walls, Bridge 0.1, Shelton, Washington, Line Segment 426, Milepost 0.82. Sheet 1261 - 3, undated.

Northern Pacific Engineering Drawing: Retaining Walls and Sidewalk, Bridge 119 - Harris Street, Missoula, Montana, Line Segment 042, Milepost 119.6, undated.

Northern Pacific Engineering Drawing: Retaining Wall, Bridge 115 - Highway Overpass, Livingston, Montana, Line Segment 041, Milepost 115.3. Sheet 1268 - 6, undated.

Northern Pacific Engineering Drawing: Retaining Wall, Bridge 115 - Highway Overpass, Livingston, Montana, Line Segment 041, Milepost 115.3. Sheet 1268 - 6, undated.

Northern Pacific Engineering Drawing: Retaining Wall North, Bridge 115 - Highway Overpass, Livingston, Montana, Line Segment 041, Milepost 115.3. Sheet 1268 - 6, undated.

Northern Pacific Engineering Drawing: Retaining Wall Details, Bridge 71.5 - Station Subway, Spokane, Washington, Line Segment 045, Milepost 71.50. Sheet 1269 - 4, undated.

Northern Pacific Engineering Drawing: Retaining Wall Details, Bridge 0.1 - Montana Street, Butte, Montana, Line Segment 327, Milepost 0.8. Sheet 1070 - 8, undated.

Northern Pacific Engineering Drawing: Retaining Wall Bent 18 - 15, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, Line Segment 051. Sheet 196 - 2387 - 25, undated.

Northern Pacific Engineering Drawing: Retaining Wall Bent 13 - 11, Bridge 0.2 - 4th Avenue Viaduct, Seattle, Washington, Line Segment 051. Sheet 196 - 2387 - 26, undated.