The glass is a simple 48" x 26 1/4" rectangle.
Given that The Burner was manufactured in Tulsa OK I reached out to a bunch of glass shops by email and a day later received a call from Jackson Whitacre of Whitacre Glass who "really enjoyed foosball during his misspent youth" and recalled cutting many a piece of Industrex glass for Pleasure Games Corporation back in the 70's. It was just great chatting with Jackson as we had a number of shared foosball experiences. The only bummer was that he confirmed Industrex pattern glass is long gone
At this point I am continuing the search by reaching out to old glass suppliers in Chicago and New York City. If anyone knows of suppliers like Whitacre Glass, who were established in 1935, in ORD or NYC, please leave a note here!