Frank Maraschiello at Rago discusses Art Nouveau in the upcoming 20th Century Auction taking place October 15th. The sale features rare Art Nouveau works by Agathon Léonard, François-Raoul Larche, Julien Caussé, and Louis Chalon. Watch the video below to see highlights and how these works illustrate two great themes of Art Nouveau: organic form and nature, and the female form.