Nope - not Van Thal - If it helps much, John Burke has told me that - 'I've known men who are not that handsome, and some who may be lumpish, glowering, ill-favoured, call it what you will...but Bertie was quite terrifyingly, downright ugly!'
No joy this end, either, i'm afraid. Don't think I've ever once encountered a photograph of Herbert Van Thal, but i've put the boys in the lab on the case.
Hey, Des! I recogniise the mugshot! I scanned it from the back of the Tandem '66 edition of Birkin's classic Where Terror Stalked!
From the first, I set myself against "literature"; the story was the thing, and no amount of style could persuade me to select a story that lacked genuine, unadulterated horror. For those who wanted something high-brow there was plenty.
Does he have any living relatives? If he didn't have children himself, maybe he has nephews/nieces? I'm thinking that if you tracked down a relative they might be able to give you a pic - and, possibly, a whole lot of inside info for your piece.