L&P readers will be interested to see that GMU economist Daniel Klein has made two of his"libertarian theoretics" available online as powerpoints. One is Challenging, Bargaining, and Royalty: An Analysis of Libertarian Argumentation. The other is Mere Libertarianism: Blending Hayek and Rothbard. (The latter is based on a 2004 article Klein published in Reason Papers.) Check them both out!