The artistic relationships among Jackson Pollock (1912-1956), Alfonso Ossorio (1916-1990), and Jean Dubuffet (1901-1985) strongly influenced the development of postwar art. Ossorio, the central figure in the trio, was an early champion of Pollock and the close friend of Dubuffet, whose radically anticultural Art Brut collection was prominently displayed at Ossorio's Hamptons estate. Dubuffet's admiration for Ossorio is evident in his 1951 essay on...