If you find yourself in Miami, Florida in the next few month, be sure to visit the Wolfsonian Museum in Miami Beach for an exhibition of Wiener Werkstätte postcards: Selections from the Leonard A. Lauder Collection.
This is part of the same collection which was shown at the Neue Gallery in New York a few years ago. If you missed that one, this is your chance to see it again. They also have a fantastic collection of Art Nouveau in their permanent collection.