Swiss Art Brut 1945–2026 is being published to coincide with an exhibition celebrating the 50th anniversary of the Collection de l’Art Brut (Swiss). It brings together a wide range of works from the Lausanne museum’s collection that were created by Swiss artists or artists who worked in Switzerland. With Switzerland as the common thread, this publication and the accompanying exhibition highlight the close and lasting ties between the originator of the concept of art brut Jean Dubuffet and this country. Indeed, it was this close bond that led him to donate his collection of outsider art to the City of Lausanne in order to ensure its preservation and the public’s access to it. The book includes a foreword by writer Metin Arditi and a presentation by Sarah Lombardi, director of the museum and curator of the exhibition, followed by Jean Dubuffet’s own handwritten notes recounting his trip to Switzerland in search of extra-cultural works in the summer of 1945. This previously unpublished document is reproduced here in facsimile. Other authors provide further analyses of the works: Michel Thévoz, the museum’s first director; Lucienne Peiry, who succeeded him until 2011; Andreas Steck, president of the Aloïse Corbaz Association; and Astrid Berglund and Eleanor Philippoz, respectively curator and outreach coordinator at the Collection de l’Art Brut.