I read this real quick-like today... it was a good quick read.
I've known the story of Helen Keller, like anyone else, but learned something I didn't know from reading this book. She had a marriage proposal! Her mother got in the way of that, so it never came to fruition, but I didn't know that!
I remember seeing The Miracle Worker performed excellently at my high school and think I may have read a shortish book about her in the past, but found this book in the number of books my mother-in-law inherited to us so I thought I'd kill some time and read it today.
It was good. ;)