1990 - The Mystery of the Flying Express [The Hardy Boys] (Paperback) ISBN-13: 9780006936657 ISBN-10: 0006936652 Genres: Children's Books, Mystery, Thriller & Suspense ? 1990 - The Short Wave Mystery [The Hardy Boys] (Paperback) ISBN-13: 9780006936664 ISBN-10: 0006936660 Genres: Children's Books, Mystery, Thriller & Suspense ? |