"Comparative presentation drawings for the 1903 Charles R. Roberts Project illustrate contrasts between a typical existing 30-lot city block in Oak Park (top) and Wright’s envisioned 32-lot Quadruple Block Plan (bottom) that covers the same area but provides privacy and open-space benefits. (© 2002 by The Frank Lloyd Wright Foundation, Scottsdale, Arizona.)" 1
1 Berdeana Aguar, Charles E. Aguar, _Wrightscapes: Frank Lloyd Wright's Landscape Designs_ (New York, London: McGraw-Hill Professional), 57