What began as a simple letter--a mid-career architect's comments to a young writer--turned into a 32-year correspondence, by turns amusing, inflamed, and conciliatory. Frank Lloyd Wright and Lewis Mumford, two pivotal figures in 20th-century American architecture and urbanism, were both passionate writers, keenly aware of world events. Their 150 letters from 1926--1958 covered a wide range of topics, including Wright's position in the history of American architecture and contemporary practice, their friends and rivals, the invention and spread of the International Style, and political events in Europe and the US. A fallout over isolationist politics in the early 1940s led to a 10-year gap in their exchange, and when it resumed, the two were on an entirely different footing: Wright, the elder dean of American architecture at the height of his creative powers, and Mumford, an established critic in late middle age deeply committed to rebuilding a humanist outlook in the aftermath of World War II. Frank Lloyd Wright & Lewis Mumford offers an intimate look inside the minds and hearts of these two cultural giants, deepening our understanding of the men and the society they helped shape.