Frank Lloyd Wright, The Heroic Years 1920 - 1932 - Automobile Objective for Gordon Strong, project - FLLW Archive Drawing Number 2505.039: Perspective (p. 106)

Drawing Citation

Drawing 039 - Perspective from below with people on ramps
Automobile Objective for Gordon Strong, project (is cited in)
Frank Lloyd Wright, The Heroic Years 1920 - 1932 (published in)