Norman Macdonnell an anthology series they had done. Their boss at CBS, Harry Ackerman, and other network executives dismissed that title, preferring "Gunsmoke", a program heading that Ackerman himself was credited with conceiving. Once given permission to proceed with "Gunsmoke", Macdonnell began developing a detailed production schedule for the new series' 30-minute episodes and arranging auditions to cast its recurring characters. His and Meston’s "Jeff Spain" soon became United States Marshal Matt Dillon, and veteran voice actor William Conrad was chosen by Macdonnell, Meston, and two other CBS screeners to portray that lead character. Other seasoned actors soon filled the needed regular
Ken Curtis appeared as muleskinner Graydon in the episode "Graydon's Charge" of the syndicated Western television series, "Death Valley Days", also guest starred Denver Pyle and Cathy Lewis. Curtis remains best known for his role as Festus, the scruffy, cantankerous, and illiterate deputy in "Gunsmoke." While Marshal Matt Dillon had a total of five deputies over two decades, Festus held the role the longest (11 years), in 304 episodes. Festus was patterned after "Cedar Jack" (Frederick Munden), a man from Curtis' Las Animas childhood. Cedar Jack, who lived 15 miles south of town, made a living cutting cedar fence posts. Curtis observed