Andy Warhol (1928-1987) is arguably the most iconic figure of twentieth-century art, a highly enigmatic personality who not only altered the definition of art itself but also left in his wake a vast and staggeringly complex record of his activities. Warhol's archive consists not only of his artworks but also of 1,500 cardboard boxes, flat files and trunks filled with source material, memorabilia, correspondence and junk mail. The catalogue raisonn?...