Halloween II Novel

Does anyone have any information on the artist who did the cover artwork for the Halloween II novel by Jack Martin? It was signed “gerber” but that’s it. It’s just one of those things I’ve always wondered about.

Is that the one with the Jack o lantern with the mouth busting open to reveal the screaming mouth of a woman? I actually used to have that
novel and so wished I had it today. I’m sorry though I do not know who did the art for it.

-K

Yup, that’s the one. It’s cool, just thought I’d try my luck here. Been trying to find info on the artist for years.