One of the most significant artists of his generation, Sigmar Polke came of age creatively in Dusseldorf around 1963. His earliest work was crude and humorous, its images outrageous, and its content seemingly trivial, but embedded in these works were subversive and parodic commentaries on consumer society, German postwar politics and classic artistic conventions. Few of Polke's works demonstrate more vividly his imagination, sardonic wit and eclectic...