Ms. McClanahan was cast in "Maude" as Bea Arthur's hapless neighbor Vivian Harmon. The show ran for six seasons. A decade later, she was on equal footing with Arthur, playing one of the three spunky geriatric roommates in "The Golden Girls." Betty White completed the trio. Estelle Getty played Arthur's mother. The show ran from 1985 to 1992, providing an unusual second-act career for its silver-haired stars.