Marx Brothers appeared, sometimes with Chico and Zeppo caricatured, in cartoons starring Mickey Mouse, Flip the Frog and others. In the "Airwolf" episode 'Condemned', four anti-virus formulae for a deadly plague were named after the four Marx Brothers. In "All in the Family", Rob Reiner often did imitations of Groucho, and Sally Struthers dressed as Harpo in one episode in which she (as Gloria Stivic) and Rob (as Mike Stivic) were going to a Marx Brothers film festival, with Reiner dressing as Groucho. Gabe Kaplan did many Groucho imitations on his sit-com "Welcome Back, Kotter" and Robert Hegyes sometimes imitated both Chico
Marx Brothers warns him that he "can't burn the candle at both ends," a candle burning at both ends. During this period Chico and Groucho starred in a radio comedy series, "Flywheel, Shyster and Flywheel". Though the series was short lived, much of the material developed for it was used in subsequent films. The show's scripts and recordings were believed lost until copies of the scripts were found in the Library of Congress in the 1980s. After publication in a book they were performed with Marx Brothers impersonators for BBC Radio. Their last Paramount film, "Duck Soup" (1933), directed by the highly