The Sunday NYT book review section has all sorts of nuggets (calling them gems would be too strong). Michael Lind reviews the Gerson and Bolton tomes. Alan Ehrenhalt (one of my favorite fair-minded observers of American politics) takes a look at David Frum’s new book. And Notre Dame historian R. Scott Appleby reviews two of this season’s efforts to resuscitate the religious Left, by E.J. Dionne, Jr. and Amy Sullivan.