The Art Show. The very title makes it sound important. It says this isn’t a show of just any art but the show of the art, the best available to the finest tastes. That is hyperbole. As the annual trade fair of the Art Dealers Association of America, the Art Show is limited to American (mostly New York) galleries that cater to a conservative, older crowd from the neighborhood around the Park Avenue Armory, the fair’s palatial uptown venue.