FRANCE - JUNE 01:  American University Student Helen Keller, Blind, Deaf And Dumb, Stands Before A Frame With The 64 Basic Symbols For The Braille Writing System In French During A Tribute To Louis Braille For The 100Th Anniversary Of His Death, At The Sorbonne In June 1952.  (Photo by Keystone-France/Gamma-Keystone via Getty Images)