"What critics judged to be one of his most beautiful canvases, "Vue de Bruges" (View of Bruges), was purchased by the French Republic for the Palace of the League of Nations in Geneva, Switzerland.Dewis was a Lauréat of the "Société des Artistes Français", an associate member of the "Société Nationale des Beaux-Arts", a founding member of the "Salon des Tuileries" and of the "Société des peintres du Paris moderne" and of the "Société royale des beaux-arts" of Belgium, among others.