Patty Duke won an Oscar in 1963 for portraying what popular author?

"The Miracle Worker" is a 1962 American biographical film about Anne Sullivan, blind tutor to Helen Keller, directed by Arthur Penn. The screenplay by William Gibson is based on his 1959 play of the same title, which originated as a 1957 broadcast of the television anthology series Playhouse 90. Gibson's original source material was "The Story of My Life", the 1902 autobiography of Helen Keller.

The movie is the story of young Helen Keller (Patty Duke), blind and deaf since infancy due to a severe case of scarlet fever. She is frustrated by her inability to communicate and subject to frequent violent and uncontrollable outbursts as a result. Unable to deal with her, her terrified and helpless parents contact the Perkins School for the Blind for assistance. In response they send Anne Sullivan(Anne Bancroft), a former student, to the Keller home to tutor her. What ensues is a battle of wills as Anne breaks down Helen's walls of silence and darkness through persistence, love, and sheer stubbornness. In the midst of the battle, Anne ultimately teaches Helen to make a connection between her hand signs and the objects in Helen's world for which they stand.

Despite the fact that Patty Duke had played Helen Keller in the play, she almost did not get the part. The reason was that Duke, 15 years old at the time, was too old to portray a seven-year-old girl, but after Bancroft was cast as Anne, Duke was chosen to play Helen in the movie.