I don’t mind the guitar wood line. I’m assuming he heard the story of Tunnel 13 when the guitar was acquired and that was the inspiration, so fitting that it’s mentioned there in the song
The connection between the Virgin Rosewood Timbers harvested in Oregan very near Tunnel13 used to make MKs guitars and in fact those very same timbers that would have witnessed the events of 11th October 1923 is exactly what MK spoke about at the album promo in London. I like the line myself having heard MK speak very deeply about it...
From the Boswell MK page:
The back and sides are beautiful old-growth Honduran mahogany, while the top is the
Tunnel redwood that used to line the train tunnels high in the Siskiyou Mountains
Boswell guitar story page:
With all the excitement surrounding Tunnel 13 and 14, and all the incredible guitar wood they both had already yielded, Bill thought there might be a chance that these abandoned tunnels may be the next source for redwood guitar tops. I drove down and picked up the first of what would end up being many huge redwood timbers, to see what we had.