Casey Carlson is a former child actress who provided the voice of Marcie in the 1980 film Bon Voyage, Charlie Brown (And Don't Come Back!!) and in three Peanuts animated television specials: You're the Greatest, Charlie Brown, She's a Good Skate, Charlie Brown, and It's Magic, Charlie Brown. Carlson also provided the voice of Polly in Life is a Circus, Charlie Brown and Truffles in A Charlie Brown Celebration.