Wouldn't I need the image in order to do a reverse image search? That's my problem.
I keep stalking the "Meat grinders" , "Head Fuck", "Western Guro", and "Wedding Dresses!" threads on /g/, but no luck.
The first post about searching for "Preston" and "Sexual Mutilation" brought up some interesting comics on e-hentai, but not the pic I'm looking for. Trying to find work by Preston at least got comics that were the right style, b/w, western, dolcett-like, raunchy.