History Photographed on Instagram: "Helen Keller learned to speak through an immensely difficult process of physical training called the Tadoma method, which she began with her teacher, Anne Sullivan, at the age of ten.⁠ ⁠ Having lost both her sight and hearing as a toddler, Keller could not imitate sounds by sight or sound but by touch.⁠ ⁠ She would place her hands on Sullivan's face, with her thumb on Sullivan's throat to feel the vibrations of the vocal cords, her index finger on the lips to

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