Related Clues

• The mustachioed brother
• Mustachioed Marx
• Brother of Harpo
• Famous eyebrow lifter
• Brother of Chico and Zeppo
• Funny Marx, and a hint to the puzzle theme in the starts of 17-, 25-, 51- and 64-Across
• "You Bet Your Life" quipster
• "Animal Crackers" name
• "... the one, the only, ___!"
• "You Bet Your Life" quipster
• Marx of distinction
• "I have had a perfectly wonderful evening, but this wasn't it" speaker
• Whom some novelty disguises imitate
• Julius Marx
• One of the Marx Brothers
• A Marx brother
• Curry unfinished, a lot eaten but no starter, leaving marks we hear
• Crab and duck featured as 1, 12, 13, 14, 16, 23 and 24
• The big brother of Marxism?
• Marx who said "Humor is reason gone mad"