AVATAR: THE LAST AIRBENDER—THE PROMISE PART 1 TOPS BOOKSCAN AT #1! February 16, MILWAUKIE, OR—In an amazing show of demand for Dark Horse’s newest graphic novel, Avatar: The Last Airbender—The Promise Part 1 soared to the top of the Bookscan charts last week! Written by Gene Luen Yang, author of the National Book Award-nominated American Born