Robert K. Greenleaf published two posthumous essay collections (available at Greenleaf.org). Today scores of colleges and universities include Servant Leadership in their curricula and hundreds of companies embrace Greenleaf's philosophy. As Greenleaf strived to serve through education, he became the leader of a movement. Bass, B. M., and Stogdill, R. M. (1990). "Bass & Stogdill's Handbook of Leadership: Theory, Research, and Managerial Applications" (3rd ed.). New York:Free Press. Frick, Don M. (2004)." Robert K. Greenleaf: A Life of Servant Leadership." San Francisco: Berrett-Koehler Publishers. Greenleaf, R.K. (2003). "The Servant-Leader Within: a Transformative Path" New York: Paulist Press. Greenleaf, R. K. (2002). "Servant Leadership:
Knox v. Greenleaf appealed and won a reversal. Greenleaf appealed to the U.S. Supreme Court. The three-page decision is unsigned. The Supreme Court began by reciting the facts of the case briefly. At issue was whether Greenleaf was a citizen of Pennsylvania. Knox's attorney argued that Greenleaf was an "inhabitant", but not a citizen, of Pennsylvania as he had already sought and received the protection of the state of Maryland. His 12-month inhabitation of the state of Pennsylvania did not qualify him for citizenship under Article 3, Section 1 of the Pennsylvania state constitution. Alexander J. Dallas and Jared Ingersoll, attorneys for Greenleaf,