Artchive: Willem De Kooning: Text from Brian O'Doherty, and list of images on the web.
Artcyclopedia: Willem de Kooning: Links to works by the artist in art museum sites and image archives worldwide.
Guggenheim Collection: Willem de Kooning: Works in the collection, biography, and suggested reading.
National Gallery of Art: Willem de Kooning: Exhibition history, biography, bibliography, and images.