California Rules of Professional Conduct — From the State Bar of California. Includes current and prior rules.
Code of Conduct of U.S. Judges — From the Legal Information Institute at Cornell Law School.
Code of Professional Responsibility for Arbitrators of Labor-Management Disputes — From the National Academy of Arbitrator's American Arbitration Association, Federal Mediation and Conciliation Service.
Model Rules for Lawyer Disciplinary Enforcement — From the Standing Committee on Professional Discipline, American Bar Association.
Model Standards of Conduct For Mediators — From the American Arbitration Association.
NFPA Model Code Of Ethics And Professional Responsibility And Guidelines For Enforcement — From the National Federation of Paralegal Associations, Inc.
State Bar Associations
U.S. Patent and Trademark Office Summary of Ethic Rules — PDF file.