American Privacy, The 400 Year Old History of Our Most Contested Right, by Frederick S. Lane, Beacon Press, Boston, 2009.
Its hard to make a point for a right to privacy when Americans are such exhibitionists. We self publish on the internet gobs of information about our personal lives that years ago people wouldn't even dream of revealing to strangers. However, there is a large body of Supreme Court decisions reinforcing that we do have a right to privacy from governmental intrusion. This is a pretty good history of the fight to keep the state from intruding into our private lives as well as unwanted attention from private business. Interesting reading and not very deep or complicated. Almost anyone could handle it, I think.