Masterpieces from the Robert von Hirsch sale at Sotheby's : with an article on the Branchini Madonna by Sir John Pope-Hennessy. - Sotheby & Co. (London, England); Hirsch, Robert von. (London : Totowa, N.J. : published for Sotheby Parke Bernet by Philip Wilson Pub; Sotheby Parke Bernet, 1978)