Mark Sperring ; illustrated by Maddie Frost. by Mark Sperring ; illustrated by Maddie Frost. Mark Sperring ; illustrated by Sam Lloyd. Mark Sperring and Maddie Frost. Billy Coughlan ; illustrated by Maddie Frost. illustrated by Maddie Frost. illustrated by Maddie Frost [illustrated by] Maddie Frost. written by Mark Sperring ; illustrated by Layn Marlow. Mark Twain ; illustrated by Valerio Vidali.