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:
Blues People deeply personal and chronicles what brought him to believe that blues was a personal history of his people in the United States. The resonance and desperation of this type of music is what compelled Baraka to learn about the history of blues music. He learned through his studies that the "Africanisms" is directly related to American culture, rather than being solely related to Black people. Baraka dedicates the book "to my parents ... the first Negroes I ever met". The 1999 reprint begins with a reminiscence by the author, then aged 65, titled ""Blues People": Looking Both Ways", in which