Constitution Society: Dedicated to research and public education on the principles of constitutional republican government.
Deborah Charles Publications: Abstracts of articles on legal theory.
Legal History and Philosophy: Quotes from important persons, texts and documents, in the area of legal history and philosophy.
Legal Information Institute - About...Jurisprudence: An overview of "jurisprudence," the philosophy of law, with additional resources on "critical legal studies" and "feminist jurisprudence."
Legal Theory: Information and materials on legal theory from JURIST: The Law Professors' Network.
Longang Institute - Reference Library: Significant historical legal writings.
The Law Fleet: Discussion forums dedicated to discussing law, and the philosophical foundations of justice.
The law of logic: Summary of the logical consequences of an agreement to communicate, and its impact on the law.
The Nature of Law: Survey of theories on the conditions of legal validity including natural law theories and legal positivism, from the Stanford Encyclopedia of Philosophy.
ThirdAmendment.com: A collection of articles on a variety of legal issues.