What to read after Frank Lloyd Wright's Usonian Houses?

One of the architectural challenges for Frank Lloyd Wright was how to provide moderate-cost houses that were as good as expensive ones. His solution was the Usonian house--a term he coined for the United States of North America. With their horizontal floor-plans, open living spaces, walls of windows, carports, and patios, these houses became models for many houses that now cover the American landscape. Here are a dozen examples of Wright's Usonian house.