What was the title character of a 90th birthday special participated in by Thelma Mae Harper made honorary mayor of?
Thelma Harper:  With Lawrence continuing to play the role into the present day, the "Mama" character has made numerous other post-television show appearances, such as on "Hollywood Squares"; "The Talk"; ""Larry the Cable Guy's Christmas Spectacular"" (2007); ""Betty White's 2nd Annual 90th Birthday"" (February 5, 2013); "The Queen Latifah Show" (May 20, 2014) etc. Betty White:  Regarded as a pioneer of television, she was one of the first women to have control both in front of and behind the camera; and is recognized as the first woman to produce a sitcom, which contributed to her receiving the honorary title "Mayor of Hollywood" in 1955.
Hollywood