the most important art event of the decade, for it was the largest single show of 20th-century avant-garde art ever held until then, and gave more people than ever a chance to see it, even if the ...

From Pop art icons Andy Warhol and Roy Lichtenstein to master of Arte Povera Michelangelo Pistoletto, these 20th Century artists transformed the genre of portraiture. Andy Warhol, Letter to the ...