Here is a little background from the website. ww.helenkellerbirthplace.org
At a plain, black well-pump in the small southern town of Tuscumbia, Alabama, one of the world's great miracles took place. It began one bright, spring day in 1887.
Standing at the totally blind and deaf Helen Keller's side was a young woman, Anne Sullivan. Miss Sullivan was steadily pumping cool water into one of the girl's hands while repeatedly tapping out an alphabet code of five letters in the other—first slowly, then rapidly. The scene was repeated again and again as young Helen painstakingly struggled to break her world of silence. 

Suddenly the signals crossed Helen's consciousness with a meaning. She knew that "w-a-t-e-r" meant the cool something flowing over her hand. By nightfall, Helen had learned 30 words.
Suddenly the signals crossed Helen's consciousness with a meaning. She knew that "w-a-t-e-r" meant the cool something flowing over her hand. By nightfall, Helen had learned 30 words.
By age 10, Helen had mastered Braille as well as the manual alphabet and even learned to use the typewriter. By the time she was 16, Helen could speak well enough to go to preparatory school and to college. In 1904 she was graduated "cum laude" from Radcliffe College. Helen Keller became one of history's remarkable women. She dedicated her life to improving the conditions of blind and the deaf-blind around the world, lecturing in more than 25 countries on the five major continents.
Her teacher, Anne Sullivan is remembered as "the Miracle Worker" for her lifetime dedication, patience and love to a half-wild southern child trapped in a world of darkness.