I tend to be suspicious of the Presidential Libraries. Too often they are devoted to the presenting a biased version of history that presents a particular president from the point of view of his partisans. So I am delighted to learn the the Nixon Library has opened a new exhibit telling the full story of Watergate, complete with an interactive kiosk labeled "Dirty Tricks." Here is a good NY Times story, and you can also explore much of the exhibit at the library website. This is how public history is supposed to work!