In 1908 the American Bar Association (ABA) approved 32 "Canons of Professional Ethics." In 1935, those Canons were adopted, in part, by the Oregon Supreme Court and the then-recently organized Oregon State Bar Association. ABA Ethics Canon 27 stated that it was unprofessional conduct for a lawyer to solicit business by advertising.American Bar Association CANONS OF PROFESSIONAL ETHICS (Adopted on August 27, 1908)
