She made guest appearances on both of the longest running prime time dramas (at that time) in US television history:
Gunsmoke (1955) and
Law & Order (1990), both running for all of twenty seasons, appearing exactly twenty years apart, in Gunsmoke in 1973, and Law & Order in 1993, and both since surpassed by the Law & Order spin-off,
Law & Order: Special Victims Unit (1999) at 23 seasons and counting.