Smithsonian Institution, Washington DC http://www.si.edu/
National Gallery, London http://www.nationalgallery.org.uk/
Museum of Art, Philadelphia http://www.philamuseum.org/
WRTI, Philadelphia http://www.wrti.org/
Guggenheim, NYC http://www.guggenheim.org/
Museum of Modern Art, NYC http://www.moma.org/
Louvre, Paris http://www.louvre.fr/llv/commun/home_flash.jsp?bmLocale=en