text: In 1955, one of CBS Radio's hit series, the Western Gunsmoke, was adapted for television and recast with different actors for various reasons (William Conrad was judged too obese to play Matt Dillon on camera, Georgia Ellis wasn't viewed as quite telegenic enough to portray Kitty on television, etc.). Howard McNear, the radio Doc Adams (who later played Floyd the barber on television's The Andy Griffith Show), was replaced by Stone, who gave the role a harder edge consistent with his screen portrayals. He stayed with Gunsmoke through its entire television run, with the exception of 7 episodes in 1971, when Stone required heart surgery and Pat Hingle replaced him as Dr. Chapman. Stone appeared in 604 episodes through 1975, often shown sparring in a friendly manner with co-stars Dennis Weaver and Ken Curtis, who played, respectively, Chester Goode and Festus Haggen.
  Personal life
  Stone's brother, Joe, was a writer who was the author of scripts for three episodes of Gunsmoke.
  Stone was a cousin of the character actress Madge Blake.
  In March 1971, Stone had heart bypass surgery at UAB Hospital in Birmingham, Alabama. In June 1980, Stone died of a heart attack in La Jolla. He was buried at the El Camino Memorial Park in Sorrento Valley, San Diego.
  Stone had a surviving daughter, Shirley Stone Gleason (born circa 1926) of Costa Mesa, California, from his first marriage of 12 years to Ellen Morrison, formerly of Delphos, Kansas, who died in 1937.
  His second wife, the former Jane Garrison, a native of Hutchinson, Kansas, died in 2002. Stone had married, divorced, and remarried Garrison.
  Legacy
  In 1968, Stone received an Emmy Award for Outstanding Performance by an Actor in a Supporting Role in a Drama for his work on Gunsmoke.