On Kawara, MAY 20, 1981, “Wednesday.” New York, From Today, 1966–2013, Acrylic on canvas, 18 x 24 inches (45.7 x 61 cm), Pictured with artist-made cardboard storage boxes, 24 5/8 x 18 5/8 x 2 inches (62.5 x 47.3 x 5 cm), Private collection. Photo: Courtesy David Zwirner, New York/London