• Bernard Cohen, Untitled (I), 1959
    Untitled (I), 1959
  • Bernard Cohen, Untitled (V), 1965
    Untitled (V), 1965
  • Bernard Cohen, Untitled (II), 1974
    Untitled (II), 1974
  • Bernard Cohen, Untitled (III), 1976
    Untitled (III), 1976
  • Bernard Cohen, Untitled (IV), c. 1976
    Untitled (IV), c. 1976