Ausstellungskatalog, Fribourg, Musée d’art et d’histoire, Université, Chapelle de l’Hôpital des Bourgeois, Grand Rue 56, Löchli Samaritaine, Galerie de la Cité Court Chemin, Planche Supérieure 24, Cour des Augustins, 21.06.-12.10.1975.
Ausstellungskatalog, Cleveland, Ohio, The New Gallery of Contemporary Art, 03.10.-24.11.1979; Dayton, Ohio, The Dayton Art Institute, 29.02.-13.04.1980; New York, NY, The Brooklyn Museum, 17.05.-13.07.1980.
Also published as sc. ed. Other edition: New York: Farrar, Straus & Giroux 1979. - The interviews in this book originally appeared in “camera” magazine, Lucerne, Switzerland.