Did efrem zimbalist jr ever star in the gunsmoke tv show?

Yes, Efrem Zimbalist Jr. appeared in an episode of "Gunsmoke." He guest-starred in the episode titled "The Hero," which aired during the show's 14th season in 1969. Zimbalist is best known for his roles in "77 Sunset Strip" and "The F.B.I.," but his appearance in "Gunsmoke" showcased his versatility as an actor.