Kurt Schwitters [ 1887–1948 ]

 
left : Merzbild mit Regenbogen (Merz Picture With Rainbow)     |  1920–39    |    Yale University
        Mixed media on plywood – 156.5 x 121.3 x 26.7 cm (61 5/8 x 47 3/4 x 10 1/2 in.)

right : Monument to the Artist’s Father    |    ca. 1922-1923    |    Yale University
          Plywood painted white – 126.9 x 26.6 x 40.8 cm (49 15/16 x 10 1/2 x 16 1/16 in. )