I've recently been in touch with Thomas Petitpas. Tom, pictured left with Ray, until 2004 ran Bradbury's Pandemonium Theater Company, and produced all of the plays. I hope shortly to probe Tom's knowledge of Bradbury on stage, with a view to improving my coverage of this neglected area.
Tom sells comics and assorted stuff through his eBay store. He has a nice line in Bradbury rareties, some of them related to the Pandemonium productions.