Andy Warhol (1928-1987) is arguably the most iconic figure in twentieth century art, an enigmatic personality who not only altered the definition of art itself but also in his wake left a vast and staggeringly complex record of his activities. Warhol's archive consists not only of his artworks but also 1,500 cardboard boxes, flat files, and trunks filled with source material, memorabilia, correspondence, and junk mail. When the catalogue raisonne is complete, it will constitute an indisputable record of the artist's paintings, drawings, and sculptures -- some 15,000 works produced by the...