Boynton Halloween Card?

When I was in school, there were Boynton cards for practically all occasions, like Birthdays, greetings, etc., and most of them had cute drawings of animals on them, with the ideas tied to the animals. But I wonder: did she ever make a Halloween card? She could have had it say: "Moo Hoo Ha Ha!" (<Your standard generic villainous cartoon evil laugh sound.) And there could be three animals making the sounds: "Moo" from a cow, "Hoo" from an owl, and "Ha Ha" from a laughing hyena. And the three animals would be standing there next to each other to sound out your Halloween greeting.