‘Matisse, Derain and their Friends: The Parisian Avant-garde 1904–1908’ is the swansong of the outgoing director of the Kunstmuseum Basel, Josef Helfenstein.

Overall, reading through Matisse’s correspondence with Camoin in La Revue de l’Art (12, 1971) makes me suspect that Matisse’s behavior during Vichy had little to do directly with the presence of ...