You might want to start with a bibliography, or, even better, an annotated bibliography. These are listings of other book-length works (often including theses and journal articles as well); annotated bibliographies include descriptions and indexes to help you find what you're looking for. Some bibliographies that might be good starters include:

"A Comprehensive Anarchist Bibliography" on the Web

Anarchist Thinkers and Thought: An Annotated Bibliography
Nursey-Bray, Paul
Greenwood Press, ISBN: 0-313-27592-0

I also came across these books during my search that might be of use:

Brewster, H. B. (1887). The Theories of Anarchy and of Law.
A Midnight Debate. London, Edinburgh: Williams and Norgate.

Holterman, T., and Maarseveen, H. Th. J. F. van. (1984). Law and anarchism. Montreal, Quebec : Black Rose Books.

Morland, David. (1997) Demanding the impossible? : human nature and politics in nineteenth-century social anarchism. London [England] ; Washington, D.C. : Cassell.

J. Roland Pennock and John W. Chapman. (1978) Anarchism. New York: New York University Press. (This is from the Nomos series of law theory books - a tip from another Radical Reference librarian recommended this one.)