"How do you build innovative, energy-conscious, low-cost houses that are specifically suited to individual sites and a family's informal life style? Such issues pose complex problems for architects practicing today, yet Frank Lloyd Wright successfully resolved them in the houses he built in the later period of his prolific career. Known as his Usonian houses, these work have a particular relevance today because of the current concern for energy conservation, ecological integrity, and personalized design. After defining organic architecture, John Sergeant shows how the first Usonian - the Jacobs house built in 1937 - incorporates Wright's techniques Sergeant then explores how the Usonian design was adapted to meet the special needs of over fifty clients in climates as different as those o the Pacific Northwest, the Great Lakes, and the Mississippi basin. Thent he author describes Taliesin - the experimental, creative, cooperative community where Wright and his associates worked and lived - and shows how the Usonian concept was carried out in practice there. Broadacre City, Wright's plan for the 'nation urbanized,' is discussed as the context for the Usonian houses, as well as for Wright's populist social program. Sergeant not only reviews the contemporary criticism of the radical proposal for city planning, but relates it to today's changing social and environmental awareness. He concludes by summarizing the implications of organic design at both the individual level of the Usonian dwelling and the social level of the Broadacre community. This well-illustrated, serious appraisal of Wright's later period provides a timely approach to solving some of today's most urgent needs." -- from back wrapper. Includes a foreword by Lionel March, several appendices, and 200 black-and-white illustrations.