Murray N. Rothbard died before he could write the third volume of his famous History of Economic Thought which would cover the birth and development of the Austrian School, through the Keynesian Revolution and Chicago School. With this six-lecture course, however, the History of Economic Thought is complete. He discusses Menger and the birth of Austrian economics, Mises and his struggles, Hayek and his contemporaries, and the loss of direction to the Austrian school in the 1970s. Rothbard also talks about the rise of the Misesian branch in the 1980s and following. Mises.Org
http://www.youtube.com/watch?v=K0CVX6wHoxQ&list=SP679A4E43F98E0FB9