The textile-block system was a fascinating experiment that Frank Lloyd Wright conducted from about 1922 to 1932 as part of his quest to find a new system of construction using a standardized building material based on the idea of twentieth-century machine technology. Robert Sweeney has researched the textile block system, providing a case-by-case account of each project, commenting on Wright's clients, collaborators, and contractors, and positioning Wright's experiment firmly within the larger historical context of concrete block technology. Sweeney traces the forms of several of the early concrete block projects to Wright's own earlier work, clarifies an array of important technical challenges the architect faced, and notes the numerous block shapes required for execution.