Beyond the Roundels

Edmund Gwenn is great! I think I might have been sometimes calling him Edward Gwenn until now, but nevertheless, I have been appreciating him.

except that he made a goof in the competition's terms and conditions and ended up on the hook to pay out prizes to everyone who wrote in with a correct explanation, which completely ate up the book's profits and drove him bankrupt

LOL, that is a terrible cautionary tale for an author!