Marx Brothers "The Cocoanuts" (1925–1926) and "Animal Crackers" (1928–1929). Playwright George S. Kaufman worked on the last two and helped sharpen the brothers' characterizations. Out of their distinctive costumes, the brothers looked alike, even down to their receding hairlines. Zeppo could pass for a younger Groucho, and played the role of his son in "Horse Feathers". A scene in "Duck Soup" finds Groucho, Harpo, and Chico all appearing in the famous greasepaint eyebrows, mustache, and round glasses while wearing nightcaps. The three are indistinguishable, enabling them to carry off the "mirror scene" perfectly. The stage names of the brothers (except Zeppo) were
Marx after Sraffa Marx after Sraffa Marx after Sraffa is a 1977 book about Marxist economics by the economist Ian Steedman, in which the author argues against the labor theory of value. Steedman has been criticized for alleged misunderstandings of Karl Marx. The economist Heinz D. Kurz reviewed "Marx after Sraffa" in "Kyklos". The political scientist David McLellan wrote in the 1995 edition of his "" that Steedman's reading of Marx has been influential. The philosopher Roger Scruton wrote that Steedman provides the most notable argument against the labor theory of value from the New Left. The Marxist theorist Ernest Mandel considered "Marx