Kunstmuseum Bern 18 Öffentliche Kunstsammlung Basel 17 Musée Rath 16 Geneva (Switzerland). Musée d'art et d'histoire 14 Sammlung Thyssen-Bornemisza 9 Öffentliche Kunstsammlung Basel. Kupferstichkabinett 8 Kunstmuseum Basel, Öffentliche Kunstsammlung 7 Museum für Gegenwartskunst Basel 7 Geneva (Switzerland). Musée d'art et d'histoire. Cabinet des estampes 6 Kunsthaus Zürich 5 Schneider, Hugo, 1916- 5 Hall, Richard, 4 International Congress of the History of Art Basel, Switzerland) 4 Klee, Paul, 1879-1940 4 Musée Barbier-Mueller 4 Press, World Trade 4 Boerlin-Brodbeck, Yvonne, 1929- 3 Collections Baur 3 Geneva (Switzerland). Musée d'art et d'histoire. Cabinet des dessins 3 Helmhaus Zürich 3 Herdt, Anne de 3 Karl Baedeker (Firm) 3 Kranzler, David, 1930- 3 Kuthy, Sandor 3 Marchand, Bruno 3 Meier, Nikolaus 3 Museum Rietberg 3 Museum of Modern Art (New York, N.Y.) 3 Müller, Christian, Dr 3 Pro Helvetia (Foundation) 3 Russell, Margarita 3 Schweizerisches Landesmuseum 3 Abbado, Claudio, 2 Adolf-Wölfli-Stiftung 2 Altes Museum (Berlin, Germany) 2 Aly, Götz, 1947- 2 Art Gallery of New South Wales 2 Association Musée d'art moderne (Geneva, Switzerland) 2 Association relative à la télévision européenne 2 Ayers, John 2 Bachmann, Jul 2 Baedeker, Karl 2 Beil, Ralf 2 Belloc, Hilaire, 1870-1953 2 Bonjour, Edgar, 1898- 2 Botta, Mario, 1943- 2 Browne, Aisling, 2 Burger, Fritz, 1877-1916 2 Burnett, Amy Nelson, 1957- 2 Civil, Alan 2 Collection Barbier-Müller 2 Curiger, Bice, 1948- 2 Eisler, Colin T. 2 Emanuel Hoffmann-Stiftung 2 Fehlmann, Marc 2 Ferrazzini, Pierre-Alain 2 Galerie Beyeler 2 Goldie Paley Gallery 2 Horovitz, Joseph, 1926-2022 2 Howarth, Elgar 2 Hug, Lina 2 Hughes, Christopher 2 Icarus Films 2 International Exhibitions Foundation 2 Koetsier, Jan, 1911-2006 2 Kunzle, David 2 Lardner, Dionysius, 1793-1859 2 Longhauser, Elsa Weiner 2 Los Angeles County Museum of Art 2 Mackenzie, Harriet D. S. 2 Martin, Frank, 1890-1974 2 Martin, Irene 2 Mason, Rainer Michael 2 McCormack, Bruce L. 2 Montaigne, Michel de, 1533-1592 2 Moore, John, 1729-1802 2 National Gallery (Great Britain) 2 National Gallery of Art (U.S.) 2 Obrist, Hans-Ulrich 2 Philip Jones Brass Ensemble, 2 Robinson, Hastings, 1792?-1866 2 Rosenthal, Angela 2 Schmidt, Georg, 1896-1965 2 Schweizerisches Festspielorchester, 2 Senn, Alfred Erich 2 Smaczny, Paul, 2 Smithsonian Institution. Traveling Exhibition Service 2 Smithsonian/Folkways Recordings 2 Spoerri, Elka 2 Spyri, Johanna, 1827-1901 2 Stead, Richard 2 Stiftung Oskar Reinhart 2 Switzerland 2 T & C Film AG 2 Thyssen-Bornemisza, Heinrich, Baron 2 Töpffer, Rodolphe, 1799-1846 2 Tōkyō Kokuritsu Kindai Bijutsukan 2 Vaughan, William, 1943- 2 Vischer, Theodora 2 Vital, Nicolo 2