Charles Lane's new book, The Day Freedom Died: The Colfax Massacre, the Supreme Court and the Betrayal of Reconstruction, is at the top of my "to get" list. I mention this because Mr. Lane is currently guest blogging at the Volokh Conspiracy. Professor Volokh's post introducing Mr. Lane is here. Mr. Lane's posts to date are here and here.
Those of you who are interested in the Reconstruction period should take a look.