Frank Lloyd Wright Drawings: Masterworks fron the Frank Lloyd Wright Archives - Studio, "Windswept" for Franklin Watkins, project - FLLW Archive Drawing Number 4021.006: Aerial Perspective (p. 250)

Drawing Citation

Drawing 006 - Aerial perspective from entrance side at the low end of studio
Studio, "Windswept" for Franklin Watkins, project (is cited in)
Frank Lloyd Wright Drawings: Masterworks fron the Frank Lloyd Wright Archives (published in)