It would appear that Betty White remains alive :
Betty Marion White Ludden (n?e White; born January 17, 1922)[2] is an American actress and comedian, with the longest television career of any entertainer, spanning more than 80 years.
Regarded as a pioneer of television, she was one of the first women to exert control both in front of and behind the camera and is recognized as the first woman to produce a sitcom (Life with Elizabeth), which contributed to her receiving the honorary title Mayor of Hollywood in 1955.