As I mentioned, Friedman's work is probably the standard. His web
pages at <http://www.best.com/~ddfr/> contain a lot of info, including
excerpts (though not the whole) of _Machinery of Freedom_. I have not
yet published my writings on what I believe is the changing nature of
intellectual property, but I plan to shortly (and of course, those
writings will not be copyrighted, so I will make them available on my
web site <http://www.piclab.com/> and make money from them in other
Property rights are indeed the foundation of anarcho-capitalism.
Including the most fundamental property of all--one's own body, and
the products of one's own labor.