Northern Pacific Engineering Drawing: Truss Details, Bridge 87+4250 - Buland Drive, Castle Rock, Washington, Line Segment 052, Milepost 87.80. Sheet 429 - 6, undated.

Northern Pacific Engineering Drawing: Truss Details, Bridge 7 - Marent Gulch, west of Nagos, Montana, Line Segment 043, Milepost 7.1. Sheet 1068 - 22, undated.

Northern Pacific Engineering Drawing: Truss Details, Bridge 1 - Columbia River, west of Pasco, Washington, Line Segment 048, Milepost 1.32. Sheet 358 - 7047 - 8, undated.

Northern Pacific Engineering Drawing: Truss Details, Bridge 1 - Columbia River, west of Pasco, Washington, Line Segment 048, Milepost 1.32. Sheet 358 - 7047 - 7, undated.

Northern Pacific Engineering Drawing: Truss Detail, "NP Transfer", Tacoma, Washington, Line Segment 608, undated.

Northern Pacific Engineering Drawing: Trunnions/Bearings, Bridge 36.8 - west Waterway, West Seattle, Washington, Line Segment 051. Sheet 1063 - 36, undated.

Northern Pacific Engineering Drawing: Trough Floor, Bridge 71.1 - Browne Street, Spokane, Washington, Line Segment 045, Milepost 71.41. Sheet 1054 - 7, undated.

Northern Pacific Engineering Drawing: Trough Floor, Bridge 71.1 - Browne Street, Spokane, Washington, Line Segment 045, Milepost 71.41. Sheet 1054 - 7, undated.

Northern Pacific Engineering Drawing: Trough Floor, Bridge 0.2 - Howard Street, Spokane, Washington, Line Segment 046, Milepost 0.28. Sheet 1054 - 8, undated.