In the past, Harris served on the boards of the Girl Scouts of the USA, Independent Sector, Council on Foundations, National Organization for Women, National Urban League, Save the Children, National Committee Against Discrimination in Housing, and Overseas Development Corporation.
Second Vatican Council | World Boxing Council | United States National Research Council | National Research Council | Privy Council of the United Kingdom | British Council | Council of Trent | Council of Europe | National Security Council | Legislative Council | Privy Council of England | Greater London Council | Council on Foreign Relations | Lord President of the Council | United States National Security Council | Legislative Council of Hong Kong | City Council | World Council of Churches | Council of Constance | United Nations Security Council | New York City Council | London County Council | Auckland Council | Her Majesty's Most Honourable Privy Council | United Nations Security Council resolution | Medical Research Council (UK) | Council of Chalcedon | Order in Council | Council of Ministers | Supreme Council of Antiquities |
He was a major force behind the establishment of the Council on Foundations, the Foundation Center, and Independent Sector.