TEENAGE: THE CREATION OF YOUTH CULTURE By Jon Savage Viking, $37.50 Contrary to what most of us believe, the idea of the teenager as icon did not simply start in the 1950s with Elvis, James Dean, sock hops and beatniks. At least, so says acclaimed music and pop culture writer Jon Savage. Truth is, he claims in this definitive history, everything credited to teenagers as new and revolutionary after the Second World War was heralded at least a halfcentury earlier. Savage casts back to 1875 to launch this tale of youth in revolt and takes readers through to 1945 and the death of one of the world’s most famous teenagers — Anne Frank. The author promises a dazzling fusion of film, music, literature, diaries, fashion, politics, social history and art. And he delivers.