Daniel Wildenstein, 84, art dealer and scholar, died following surgery in Paris on Oct. 23. For decades, Wildenstein was the head of Wildenstein & Company, one of the world's most successful art galleries. He was also a distinguished scholar of Impressionism, authoring catalogous raisonnes for Monet, Manet and Gauguin (the last was completed shortly before his death). Prior to assuming the helm of the family firm in 1959, he was exhibitions director at the Musee Jacquemart-Andre in ...