title: Friendly letters on the correspondence of Helen Keller, Anne Sullivan, and Alexander Graham Bell.
mesh_terms: D001766:Blindness / Q000266:history* / Q000534:rehabilitation; D003638:Deafness / Q000266:history* / Q000534:rehabilitation; D004519:Education, Special / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D014481:United States; D014956:Writing