Alastair Duncan is an international consultant on 19th- and 20th-century decorative arts and was, for fourteen years, a specialist and consultant on the subject for Christie's, New York. He is the author of numerous books on Art Nouveau and Art Deco, among them Art Nouveau Furniture, American Art Deco and Tiffany at Auction. He has also been a contributor to magazines including 'Vogue', 'Connoisseur' and 'House & Garden'. Born in South Africa, he is a graduate of the University of California at Berkeley, and lives in New York City. This is his 34th book. Georges de Bartha is an independent art dealer and consultant, based in Geneva. He was previously, for over 20 years, an expert of 20th-century decorative arts at various international auction houses, holding sales in Geneva, New York and Tokyo. He is the author of 'L'Art 1900' and co-author with Alastair Duncan of 'Glass by Galle' and 'Art Nouveau and Art Deco Bookbindings: French Masterpieces 1880-1940.