After Superman wraps up "The Curse of Magic" with a resounding "Le-Lak!", we have another full-page ad for cereal in Superman 171.
As you'll notice in the "fine print," our Leprechaun's name is "L.C. Leprechaun." We can all figure out what those initials stand for, eh?
As you can see both from the text and the depiction of the box, in August 1964, Lucky Charms cereal was NEW.
I think the devilish brats in the comic strip must be the great-grandkids of the Katzenjammer Kids, ja? They don't look cute, they look like the bullies that tried to knock off my glasses on the playground at recess.
Sic 'em, L.C.!