American Color Study, 2009 (based on Red, Yellow, Blue, White, Black, 1953, Ellsworth Kelly) oil on linen, 30 x 30 cm, Private CollectionCelestial Chart (White 1), 2008-2009 oil on linen, 110 x 110 cm, Private CollectionCelestial Chart (White 2), 2009 oil on linen, 110 x 110 cm, Thoma Art Collection, Chicago