Johnstone, William W. Avenger William W. Johnstone ; with J.A. Johnstone. - New York, NY : Pinnacle Books, 2007. - 282 p. ; 18 cm. - The last gunfighter ; 15 . ISBN: 0786017376 (pbk.) 9780786017379 (pbk.) Subjects--Topical Terms: Terrorism--Fiction. Index Terms--Genre/Form: Western stories.