They also collaborated on such classics as At the Circus, The Big Store, Horse Feathers, Duck Soup, and A Night at the Opera.  
What a family!  Herbert invented a coupling device essential to World War II bombardiers.  Julius wrote Many Happy Returns, a serious study of the American tax system, as well as an autobiography. Leonard was an accomplished pianist, and Arthur was even better known as a harpist.  They also collaborated on such classics as At the Circus, The Big Store, Horse Feathers, Duck Soup, and A Night at the Opera.  FTP name these masters of sibling revelry.
What a family!  Herbert invented a coupling device essential to World War II bombardiers.  
the Marx Brothers