"Too Late To Die Young: Nearly True Tales From a Life," by Harriet McBryde Johnson. About two years ago, Harriet Johnson appeared on the cover of The New York Times Magazine. If you saw her portrait, you probably haven't forgotten it. A thin woman in a wheelchair leans forward, a purple shawl draping one shoulder. Johnson describes it this way in her new memoir: "The portrait has been described as beautifully disturbing, and most nondisabled people seem to see it that way. I'd prefer to call it disturbingly beautiful, but I'll take it the other way around if I must."...