The American comic book "Raw" published a rather good section of his work, including fold-outs of his larger works. Sadly, I no longer have that edition. From what I remember, it states he was an obsessive who documented the weather every day. Lived by himself and most of his work was found after he was dead. He copied a lot of his images from childrens' book, magazines, etc. I remember these very graphic graphics of young girls being strangled, their tounges lolling out, hanging naked from scaffolds and trees with feet removed, etc. His fetishes where there for all to see. And he spent every waking hour, when he was not working his job, on his art.
that particular Raw issue was published by Penguin and in quite a large run, so if you are persistent, you'll find