Document, 1955 Letter from Yves Klein to Jacques Tournier, author of the weekly "Les Nouvelles littéraires, artistiques et scientifiques".
Exhibition, 10 Dec 2022 - 16 Apr 2023 Yves Klein - Dreaming in the dream of others Fondation Opale, Lens, Switzerland
Document, 1958 Letter from Yves Klein to the President of the International Confederation of Atomic Explosions