Marx Brothers Say She Is". Their third feature-length film, "Monkey Business" (1931), was their first movie not based on a stage production. "Horse Feathers" (1932), in which the brothers satirized the American college system and Prohibition, was their most popular film yet, and won them the cover of "Time" magazine. It included a running gag from their stage work, in which Harpo produces a ludicrous array of props from inside his coat, including a wooden mallet, a fish, a coiled rope, a tie, a poster of a woman in her underwear, a cup of hot coffee, a sword; and, just after Groucho
Marx Brothers and Chico appeared less prominently. The two younger brothers, Gummo and Zeppo, never developed their stage characters to the same extent as the elder three. They each left the act to pursue business careers at which they were successful, and for a time ran a large theatrical agency through which they represented their brothers and others. Gummo was not in any of the movies; Zeppo appeared in the first five films in relatively straight (non-comedic) roles. The performing lives of the brothers owed much to their mother Minnie Marx, who acted as their manager until her death in 1929. The