From 1936 until 1944, animation directors and animators such as Freleng, Avery, Clampett, Jones, Arthur Davis, Robert McKimson, and Frank Tashlin worked at the studio. During this period, these creators introduced several of the most popular cartoon characters to date, including Daffy Duck (1937, "Porky's Duck Hunt" by Avery), Elmer Fudd (1940, "Elmer's Candid Camera" by Jones), Bugs Bunny (1940, "A Wild Hare" by Avery), and Tweety (1942, "A Tale of Two Kitties" by Clampett). Avery left the studio in 1941 following a series of disputes with Schlesinger, who shortly after closed the studio for two weeks due to a minor strike similar to the better known one that occurred at Disney. A few months earlier he banished all unionized employees in what became known in retrospect as the "Looney Tune Lockout"; this time Schlesinger lost nearly all of his employees of the Avery unit. Clampett and several of his key animators took over Avery's former unit, while Clampett's own position as director of the Schlesinger-Katz studio was taken by Norm McCabe, a Clampett animator whose cartoons focused in war-related humor; McCabe, in turn, lasted barely a year before being drafted, and Frank Tashlin returned to the studio to replace him.