1973, fans were treated to five additional episodes with the lovable bartender that had been filmed before he retired. Ultimately, Gunsmoke season 19, episode 11, "The Hanging of Newly O'Brien ...

which aired 431 episodes between 1959 and 1973, and the even longer-running Gunsmoke. The time settings may not be the same, but Sheridan's focus on intertwining character dynamics, high-drama ...