Helen Keller’s Books Online
(1903) The Story of My Life
(1908) The World I Live In
(1927) My Religion
(1929) Midstream: My Later Life
(1938) Helen Keller’s Journal 1936-1937
(1955) Teacher – Anne Sullivan Macy [This one is not freely available electronically, but is available to be borrowed at no cost on the Internet Archive]