From Ebenezer Howard's turn-of-the-century concept of garden cities ‘new towns’ have evolved. The growth of new towns is not a fad. The first British new town, founded by Howard and planned by architects Raymond Unwin and Barry Parker in 1903, was Letchworth. There has been a steady increase in the establishment of new towns in several countries since, and proposals for many more in the future. In Britain, twenty-nine towns were designated between November 1946 and July 1973. The final projected populations of the New Towns range from 13,000 in Mid-Wales to 420,000 in Central Lancashire New Town. Most have final projected populations in the 60,000–120,000 range. In the United States, the National Commission on Urban Growth, composed of U.S. Senators, Representatives, Governors, Mayors and County Commissioners, proposed that at least 110 new American cities be developed, with the aid of federal funding. And at a recent meeting of the International Association of Housing Science representatives of the Association's forty member countries were told that worldwide housing demands in the next thirty years will require the creation of 3,500 new cities.