Free Civil War and Reconstruction Lectures from Yale

The other day I stumbled upon a website called Academic Earth. The purpose of the website is to provide free lectures on various subjects from the leading universities in the US. I very eagerly browsed through their history section and ran across a series of lectures by Professor David W. Blight from Yale University about the American Civil War and the period of Reconstruction afterwards. The videos on the site include the entire course. I intend to watch every one of the lectures which are quite detailed and are about 45 minutes long each.