Helmut Krone. The book.
  Graphic Design and Art
  Direction (concept, form
  and meaning) after
  advertising's Creative
  Revolution. Clive Challis
  The Cambridge Enchorial
  Press Ltd.
  ISBN 0954893107

ISBN 0-9548931-0-7 The greatest art director ever? For Bill Bernbach at Doyle Dane Bernbach his Volkswagen campaign and Avis campaign changed the way advertising art direction and advertising art directors worked. Later, back at DDB, he'd reconcile the aims of graphic design and art direction with his Polaroid campaign and Porsche campaign.