Northern Pacific Engineering Drawing: Tie Plan, Bridge 70 - Harrison Avenue, Butte, Montana, Line Segment 326, Milepost 70.7. Sheet 1074 - 14, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Van Sycle Creek, south of Zangar Junction, Washington, Line Segment 451, Milepost 7.70. Sheet 1264 - 5, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Van Sycle Creek, south of Zangar Junction, Washington, Line Segment 451, Milepost 7.70. Sheet 1264 - 5, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Marent Gulch, west of Nagos, Montana, Line Segment 043, Milepost 7.1. Sheet 1068 - 22, 1953.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Marent Gulch, west of Nagos, Montana, Line Segment 043, Milepost 7.1. Sheet 1068 - 22, 1953.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Marent Gulch, west of Nagos, Montana, Line Segment 043, Milepost 7.1. Sheet 1068 - 22, 1953.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 69, south of Ritzville, Washington, Line Segment 046, Milepost 69.07. Sheet 1263 - 27, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 68 - Wishkah River, west of Aberdeen Junction, Washington, Line Segment 402, Milepost 68.63. Sheet 443 - 30, undated.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 68 - Wishkah River, west of Aberdeen Junction, Washington, Line Segment 402, Milepost 68.63. Sheet 443 - 30, 1950.

Northern Pacific Engineering Drawing: Tie Plan, Bridge 68 - Wishkah River, west of Aberdeen Junction, Washington, Line Segment 402, Milepost 68.63. Sheet 443 - 30, 1925.