43. When Madeline was Young by Jane Hamilton

From back cover:

"When Aaron Maciver's beautiful young wife, Madeline, suffers a head injury in a bicycle crash, she is left with the mental capabilities of a six-year-old.  In the years that follow, Aaron and his second wife care for Madeline with deep tenderness and devotion as they raise two children of their own."

Even though this is an odd premise, I liked the book.  The story is told by Aaron's son, Mac, who is pretty normal but not nearly as daring as his cousin, Buddy.  It is a great look at the U.S. during the early 80's with the beginning of the civil rights movement and the escalation of the Vietnam War.  Over all, a pretty good book.  Rating:  4