On Frank Lloyd Wright's Concrete Adobe: Irving Gill, Rudolph Schindler and the American Southwest - Paperbackby Donald Leslie Johnson (Author) During the years 1919 into 1925 Frank Lloyd Wright worked on four houses and a kindergarten located in metropolitan Los Angeles using concrete blocks as the main building material. The construction system has been described by Wright and others as 'uniquely molded', 'woven like a textile fabric' and perceived as ground breaking, truly modern, unprecedented. Many have attempted to uphold these claims while some thought