Similar to the way paintings by Jean-Michel Basquiat have played a key role in the frenzy surrounding contemporary high-end art auctions, the same is happening in the more limited market of vintage contemporary art ephemera. The cards, posters and publications that feature Basquiat and chart the important moments in his…

Mary Boone’s decision to close her galleries as she gets ready to begin serving a 30-month jail sentence for tax evasion, brings to a halt the storied reign of one of New York’s most public and successful dealers.