For two decades, Gunsmoke brought law and order to the American frontier through the eyes of U.S. Marshal Matt Dillon and the citizens of Dodge City. It was one of the longest-running primetime dramas in television history, filled with action and tales of morality.

While many of the stars have passed away since it went off the air in 1975, a few key cast members and guest performers are still with us. In honor of one of the most popular Westerns of all time, let’s reminisce and see what some of the stars are up to now, and pay tribute to those we have since lost: