Morris and Linda Tannehill were two libertarian activists and thinkers who, in the early 1970s, made surprisingly profound advances in the theory of the stateless society.
Their free-market manifesto, The Market for Liberty, was written just following a period of intense study of the writings of both Ayn Rand and Murray Rothbard; it has the pace, energy, and rigor you would expect from an evening's discussion with either of these two giants.
Ludwig von Mises: "This, then, is freedom in the external life of manthat he is independent of the arbitrary power of his fellows. Such freedom is no natural right. It did not exist under primitive conditions. It arose in the process of social development and its final completion is the work of mature Capitalism." - Socialism