Northern Pacific Engineering Drawing: Walk Down Pit Entry, Scale, Longview, Washington, Line Segment 613. Sheet DE - 6964 - 2A, undated.

Northern Pacific Engineering Drawing: Shop Plan - Weighing in Motion, Scale, Longview, Washington, Line Segment 613. Sheet 245 - 6964, undated.

Northern Pacific Engineering Drawing: Shop Plan - Weighing in Motion Pit, Scale, Longview, Washington, Line Segment 613. Sheet 245 - 6964 - 5, undated.

Northern Pacific Engineering Drawing: Shop Plan - Track Switch, Scale, Longview, Washington, Line Segment 613. Sheet 245 - 6964 - 12, undated.

Northern Pacific Engineering Drawing: Shop Plan - Track Scale, Scale, Longview, Washington, Line Segment 613. Sheet 245 - 6964 - 14, undated.

Northern Pacific Engineering Drawing: Shop Plan - Track Scale, Scale, Longview, Washington, Line Segment 613. Sheet 245 - 6964 - 15, undated.

Northern Pacific Engineering Drawing: Shop Plan - Remote Relay, Scale, Longview, Washington, Line Segment 613. Sheet KA530302, undated.

Northern Pacific Engineering Drawing: Shop Plan - Plate Layout, Scale, Longview, Washington, Line Segment 613. Sheet 245 - 6964 - 8, undated.

Northern Pacific Engineering Drawing: Shop Plan - Paint Specification, Scale, Longview, Washington, Line Segment 613. Sheet 245 - 6964 - 9, undated.

Northern Pacific Engineering Drawing: Shop Plan - Motor Control, Scale, Longview, Washington, Line Segment 613. Sheet KA528891, undated.