From the website:
A Century of Style: Masterworks of Poster Design spans the breadth of the art poster’s development, from the emergence of the international poster scene in the 1890s; through the rapid development of the Art Nouveau, Machine Age, and Art Deco styles; and on to the resurgence of the contemporary poster. Exploring travel and leisure, food and beverage, and fashion and entertainment, the graphic works on view include those by prominent artists Henri de Toulouse-Lautrec, Herbert Matter, Ludwig Hohlwein, Roger Broders, and A. M. Cassandre, among many others. These colorful and vibrant lithographs span 100 years, originate from over a dozen countries, and have been selected by Robert Bachelder from his remarkable collection of vintage posters.
The John Lennon poster above, by the way, was created by Richard Avedon. There’s also this classic Milton Glaser image:
But the best of the 120 works on display are the European posters from the ’20s, ’30s, and ’40s promoting fashion, travel, and sport.
Definitely worth the trip.