Twelve works from the late dealer's private holdings will be auctioned during May's marquee sales in New York.

Collection features works by artists represented by Gladstone’s Influential Gallery.

Sotheby's to sell 12 artworks from Barbara Gladstone's collection in May, including works by Andy Warhol, Richard Prince, and ...

From Fontana’s gold “Fine di Dio” to Burri’s black “Cretto,” Sotheby’s will open its May marquee auctions with works from the dealer’s rarified trove.