"There is nothing more absurd, I think, than to have five or six different prints for the blind..." wrote Helen Keller. She would help change that. By Cori Brosnahan English Braille primer.

Amadou Ndiaye holds a Braille tablet on Jan. 26 in Bamako, Mali. The Associated Press BAMAKO, Mali — Amadou Ndiaye meticulously ran his fingers across bumps in a piece of paper, making sense of ...