Dakota Johnson

May 22, 2012,
By JULIE BOSMAN

In case there was any doubt about the blockbuster success of the “Fifty Shades of Grey” trilogy da E L James, the numbers are in: più than 10 million copies of the libri have been sold in the United States in six weeks, the publisher detto on Tuesday, putting the libri among some of the best-selling series in modern publishing.

“The sales velocity for ‘Fifty Shades of Grey’ is unprecedented, with reader demand still growing,” Anthony Chirico, the president of the Knopf Doubleday Publishing Group, detto in a statement. “As we head into the cuore of the...