Published on the occasion of an exhibition of the artist's prints and sculptures held at the Museum of Fine Arts, Bern and the Musée Jenisch, Vevey. This publication offers a comprehensive catalogue of the artist's prints to date. The first volume expands an earlier catalogue which covered only the years 1957-1991; all entries of works from the earlier edition have been revisesd. The new edition also includes additional early, as well as current works. The second volume contains a collection of new essays.