Who was Berthe Weill, art dealer of the Parisian Avant-garde Raoul Dufy, Thirty Years, or La Vie en Rose, 1931; Musée d’art moderne de Paris, gift from Mathilde Amos, 1955. 07/17/25 5:25pm “Berthe Weill, Art Dealer of the Parisian Avant-garde” is at the Montreal Museum of Fine Arts through September 7, 2025.