Children's Fiction Series Bestseller List for February 15, 2007 from sales the week ending February 11, 2007 For the Book Sense store nearest you, call 1-888-BOOKSENSE or visit www.booksense.com   Children's Series 1. Magic Tree House (hardcover and paperback) Mary Pope Osborne, Sal Murdocca (Illus.), Random House 2. The Sisterhood of the Traveling Pants (hardcover and paperback) Ann Brashares, Delacorte 3. Harry Potter (hardcover and paperback) J.K. Rowling, Scholastic 4. Warriors: The New Prophecy (hardcover and paperback) Erin W. Hunter, HarperCollins 5. Junie B. Jones (hardcover and paperback) Barbara Park, Denise Brunkas (Illus.), Random House 6. Alex Rider Adventures (hardcover and paperback) Anthony Horowitz, Puffin 7. The Clique (paperback) Lisi Harrison, Little Brown 8. Guardians of Ga'Hoole (paperback) Kathryn Lasky, Scholastic 9. A Series of Unfortunate Events (hardcover) Lemony Snicket, HarperCollins 10. Geronomo Stilton (paperback) Geronimo Stilton, Scholastic The Book Sense Bestseller List is copyrighted and cannot be reprinted without permission from the American Booksellers Association. For information on obtaining permission, contact Meg Smith, Associate Director, Book Sense Marketing, ABA, 828 South Broadway, Tarrytown, NY 10591, call (914) 591-2665, ext. 1239. Reprint Guidelines.