This is from the series' final season (Sept.-Dec. 1965), when Clint Eastwood's Rowdy Yates became the new trail boss. The familiar theme was kept for the main titles but the end titles used a wholly different theme (a secondary theme written by Russ Garcia, which had been used from the very beginning). The new main title consisted of sketches drawn by artist Ken Mundie (who did the main title art to The Wild Wild West).