Happened a couple of months ago, but haven’t seen any comment on it elsewhere. Stanford New Service has the details:
An accomplished and renowned collector, Fliegelman specialized in “association copies.” These books have a great, sometimes huge, added value largely because of who owned them. In this case, some of Fliegelman’s books once belonged to Charles Dickens, Nathaniel Hawthorne, Henry Wadsworth Longfellow, George Washington, Elizabeth Barrett Browning, John Quincy Adams, Daniel Webster and the Empress of Russia. One of them carries the most famous American signature of all, John Hancock.