This is the best and most comprehensive reader about the history, the philosophy, the economics, the jurisprudence, and the promise of liberty. (And I wrote the extensive bibliographical essay, with citations and comments, at the end.)
(The box should show The Libertarian Reader: Classic and Contemporary Writings from Lao Tzu to Milton Friedman, ed. by David Boaz and published by The Free Press.) The Libertarian Reader and many other excellent books on liberty may also be purchased from Laissez Faire Books. Among the gems available from Laissez Faire Books is Cowboy Capitalism; LFB features my review, which is a bit unusual, since I supervised the translation of the original work and the editing and production, but I explain in the review why I’m so enthusiastic about the book.
The Libertarian Reader is so great I own two copies! (one I bought, one I received for attending Cato University)