Is the article author here? Mark Dehlinger is a CAD designer. We had the displays made to order. I was part of the restoration team. There was years of research in going through dozens and dozens of LED manufacturers in China to see if we could find anything off-the-shelf first.
If you're having trouble getting hold of Mark, I would go through Joe Walser. This is the main contact page for the team:
https://www.facebook.com/TimeMachineRestoration/
edit: oh, the article is 8 years old :)