More than fifty years after Peggy Guggenheim's first Venice show in 1950, the legacy of Jackson Pollock returns to Italy in two major retrospectives. Separate shows at Courer, Venice and at the Centro Culturale Candiani in Mestre have brought together works from American and European collections including from the Metropolitan; the Stedelijk Museum, Amsterdam; the Tate Gallery, the Museum of Fine Arts, Houston; and Galleria Nazionale d'Arte Moderna,...