It's certainly Deitch but whether and where it was published, I'm unsure. Kemp published a lot of adult books that he may have used original illustrations in, but he also just lifted UG material wholesale, probably unauthorized, to use in his publications. I have many Greenleaf books that have sections on porn in comics and usually there are 'litts' to be found within. Perhaps he commissioned Deitch for an illustration, along with Osborne, Wilson, Trina and others, if you look at the completed auctions from the seller who says he's Earl's son. I may have to check my copy of the Illustrated Report the son also attempts to sell. it's been awhile since I cracked it open, but I'm pretty sure there are UG illos within.