Widely thought to be the greatest American architect, Frank Lloyd Wright was a true pioneer, both artistically and technically. At a time when reinforced concrete and steel were considered industrial building materials, Wright boldly made use of them to build private homes. His prairie house concept - that of a low, sprawling home based upon a simple L or T figure - was the driving force behind some of his most famous houses and became a model for rural architecture across America. Wright's desi...