The New York Times has more details today on the Hassam painting in the middle of the dispute between Brooke Astor's son and grandson over her care, mentioned earlier here:
"Mr. Barth’s affidavit also notes that Mr. Marshall [the son] collected a $2 million commission for selling his mother’s Childe Hassam painting 'Flags, Fifth Avenue,' for $10 million in February 2002. The document explains that the commission was paid according to Mr. Marshall’s written instructions to his mother’s bank to transfer $1 million to his account. He himself signed two $500,000 checks for the other million. Mr. Warner, one of Mr. Marshall’s lawyers, has said that Mrs. Astor came up with the $2 million figure for her son."