 He also served as a member of the National Manpower Advisory Committee and the National Advisory Committee for Project Upward Bound.He also served as chairman of the Georgia Advisory Committee to the U.S. Commission of Civil Rights and was a member of the U.S. National Commission to UNESCO from 1969 to 1972, serving on education and human rights committees.Henderson was a member of the Board of Trustees of the Ford Foundation and was president and chairman of the executive committee of the Southern Regional Council.