The Menil Collection has been presenting from January 27th 2000 an exhibition of works by the American abstraction expressionist artist Willem de Kooning (1904-1997) that explores some of the many procedures underlying the artist's work and focuses on his shifts from painting to drawing and drawing to painting. Into the late 1980s when de Kooning stopped working because of ill health, he regularly re-used and recycled his art works through various means of tracing and transferal.