After being out of print for almost four decades, the Zervos Picasso Catalogue—the authoritative reference on Pablo Picasso’s life work—will be available exclusively through Sotheby’s starting in December. Known as the Zervos, the 33 volumes contain more than 16,000 paintings and drawings and are the product of a lifelong collaboration between Picasso and Christian Zervos, the founder of Cahiers d’Art, the French publishing house that printed the first volume of the series in 1932. For the new release, Cahiers…