Albright Knox Gallery, Buffalo, USA
                       
Art Institute of Chicago, Chicago, Illinois, USA

Arts Council of Great Britain, London, UK

Australian National Gallery, Canberra, Australia

Banque Europeene d’Investissement, Luxembourg
                       
BAWAG Foundation, Vienna, Austria
                       
Bayrische Staatsgemaeldesammlung, Munich, Germany

Bibliotheque Nationale de France, Paris, France

The British Council, London, UK
                       
Centro Cultural de Arte Contemporaneo, Mexico City, Mexico
                       
Chase Manhattan Bank, New York, USA

Centro de Arte Reina Sofia, Madrid, Spain
                       
Ceolfrith Art Center, Sunderland, UK
                       
Consejeria de cultura, Santander, Spain
                       
Contemporary Arts Society, London, UK
                       
Council of National Academic Awards, London, UK
                       
Crawford Municipal Art Gallery, Cork, Ireland
                       
Chemical Bank, New York, New York, USA
                       
Cincinnati Art Museum, Cincinnati, Ohio, USA
                       
Cleveland Museum of Art, Ohio, USA
                       
Corcoran Gallery of Art, Washington DC, USA

The DG Bank Collection, Frankfurt, Germany
                       
Dallas Museum of Art, Texas, USA
                       
Denver ArtMuseum, Colorado, USA

Eastern Arts Association, Cambridge, UK
                       
Eli Broad Family Foundation, Santa Monica, California, USA

Fitzwilliam Museum, Cambridge, UK
                       
La Foundation Edelman, Lausanne, Switzerland
                       
Foundation Stiftelesen Focus-Boras, Sweden
                       
Fundacio La Caixa, Barcelona, Spain   
                       
First Bank Minneapolis, Minneapolis, Minnesota, USA   
                       
          Fogg Art Museum, Harvard University, Cambridge, Massachusetts, USA

Grafische Sammlung Albertina, Vienna, Austria

Galleria D’Arte Moderna, Bologna, Italy
                       
          Gallery of Modern Art Laszlo Vass Collection, Veszprem, Hungary            
                       
Graphische Sammlung Albertina, Vienna, Austria            
                       
Guggenheim Museum, New York, New York, USA      
                       
Hirshhorn Museum and Sculpture Garden, Washington DC, USA

High Museum of Art, Atlanta, Georgia, USA

Hotel des Arts, Toulon, France            
                       
Hunterian Art Gallery, Glasgow, UK
                       
Hugh Lane Municipal Gallery of Modern Art, Dublin, Ireland

Irish Museum of Modern Art, Dublin, Ireland

Laing Art Gallery, Newcastle, upon, Tyne, UK
                       
Leicestershire Educational Authority, Leicester, UK
                       
Louisiana Museum, Humlebaek, Denmark

Modern Art Museum of Fort Worth, Fort Worth, Texas, USA
                       
Mellon Bank, Pittsburgh, Pennsylvania, USA
                       
Metropolitan Museum of Art, New York, USA
                       
Museo de Arte Contemporaneo, Caracas, Venezuela
                       
Museo de Arte Contemporaneo, Monterrey, Mexico
                       
   Museo de Arte Moderno, Col. Bosques de Chaultepec, Mexico
                       
Museum of Fine Art, Boston, Boston Massachusetts, USA
                       
Museum of Modern Art, New York, USA

Manchester City Art Gallery, Manchester, UK
                       
Museum Folkwang, Essen, Germany         
                       
Musee de Val de Marne, Ivry, sur, seine, France
                       
Musee du Dessin et de l’Estampe Originale, Gravelines, France
                       
Musee Jenisch, Vevey, Switzerland
                       
Musee d’Art Contemporani de Barcelona, Barcelona, Spain
                       
Museum Moderner Kunst, Stiftung Ludwig, Vienna, Austria
                       
Museum Pfalzgalerie, Kaiserslautern, Germany         
                       
Museum fur Sub, Kultur, Berlin, Germany

     National Gallery of Art, Washington DC, USA

Nagoya City Art Museum, Nagoya, Japan

National Gallery of Victoria, Felton Bequest, Melbourne, Australia
                       
Neue Galerie der Stadt Linz, Linz, Austria
                       
Northern Arts Association, Newcastle upon Tyne, UK
                       
Orlando Museum of Art, Orlando, Florida, USA
                       
Paine Webber Group, Inc., New York, USA

Power Institute of Contemporary Art, Sydney, Australia
                       
Phillip Morris Inc., New York, USA

Ruhr Universitat Bochum, Germany
                       
The Phillips Collection, Washington DC, USA

Saastamoisien Saatio, Helsinki, Finland
                       
Sala Rekalde, Bilbao, Spain
                       
Sammlung Essl-Vienna, Austria
                       
Sara Hilden Art Museum, Tampere, Finland
                       
Stattsgalerie, Stuttgard, Germany
                       
Stadtische Galerie im Lenbachhaus, Munich, Germany
                       
Santa Barbara Museum of Art, Santa Barbara, California, USA
                       
Smithsonian American Art Museum, Washington, D.C. USA
                       
Snite Museum of Art, Notre Dame, Indiana, USA
                       
San Diego Museum of Art, San Diego, California, USA

The Tate Gallery, London, UK

Tokyo International Forum, Tokyo, Japan
                       
The St. Louis Art Museum, St. Louis, Missouri, USA

Ulster Museum, Belfast, Ireland
                       
University of Limerick, Ireland
                       
Victoria and Albert Museum, London, UK 
                       
Walker Art Center, Minneapolis, Minnesota, USA
                       
 Whitworth Art Gallery, Manchester, UK
                       
Zentrum fur Kunst und Medien Technologie, Karlsruhe, Germany