Well, there is many books about Anastasia that focus perhaps more on Anna Anderson than anything else. There are not any biographies individually of any of them, nor collectively. This because some would percieve the subject as trivial, some are not interested, so it would be hard to find a market for such a book. But it is to be regreted that there are not any. Hopefully that will be rectified someday. I know that most any of us on the otma threads would buy such a book.