How Did Maureen O'Sullivan Die?

Maureen Paula O'Sullivan was an Irish-American actress who played Jane in the Tarzan series of films during the era of Johnny Weissmuller. She starred in dozens of feature films across a span of more than half a century and performed with such stars as Laurence Olivier, Greta Garbo, Fredric March, William Powell, Myrna Loy, Marie Dressler, Wallace Beery, Lionel Barrymore, the Marx Brothers and Woody Allen.