Number The Stars By Lois lowry and The holocost

In the book Number The Stars the main character is Annemarie. Her best friend Ellen. This book is a non fiction. And based on a true story. You can buy this book at .http://books.google.com/books?id=V2Nlg8AWg2AC&dq=number+the+stars&printsec=frontcover&source=bn&hl=en&ei=e9BpS8GGMorp8QavmNi4Bw&sa=X&oi=book_result&ct=result&resnum=12&ved=0CCgQ6AEwCw#v=onepage&q=&f=false