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.

  YouTube: Bernbach and Krone speak about Avis
  DDB's Jack Marriucci talks to Krone about 'The New Page'
  Krone & Koenig talk about VW
  The One Club Hall of Fame
  Design Observer
  Sell sell blogspot
  Dave Dye, (a great UK art director)'s blog
  Scandinavian Ad blog
  Allan Peters
  Creative Classics
  La Petite Claudine
  Fontblog (Schriftgeschichten)
  Tadahisa Nishio
  Dave Trott
  'Remember those great Volkswagen ads?'