Clarence S. Stein (1882-1975) was an architect, housing visionary, regionalist, policymaker, and colleague of some of the most influential public figures of the early to mid-twentieth century, including Lewis Mumford and Benton MacKaye. Kristin E. Larsen's biography of Stein comprehensively examines his built and unbuilt projects and his intellectual legacy as a proponent of the "garden city" for a modern age. This examination of Stein's life and legacy focuses on four critical themes: his collaborative ethic in envisioning policy, design, and development solutions; promotion and implementation of "investment housing;" his revolutionary approach to community design, as epitomized in the Radburn Idea; and his advocacy of communitarian regionalism. His cutting-edge projects such as Sunnyside Gardens in New York City; Baldwin Hills Village in Los Angeles; and Radburn, New Jersey, his "town for the motor age," continue to inspire community designers and planners in the United States and around the world.