1
Untitled [Quetta, Pakistan], 1974–1978. Photograph courtesy of Alex Jamison and the Estate of Sigmar Polke/ Artist Rights Society, New York.
2
Negative Value II (Mizar), 1983. Photograph courtesy of Alistair Overbruck and Estate of Sigmar Polke/ Artists Rights Society, New York.
3
Raster Drawing (Portrait of Lee Harvey Oswald), 1963. Photograph courtesy of Wolfgang Morell and the Estate of Sigmar Polke/ Artists Rights Society, New York.
4
Untitled (Rorschach), 1999. Photograph courtesy of Alistair Overbruck and the Estate of Sigmar Polke/ Artists Rights Society, New York.