Frank Lloyd Wright, Architect: Essays by Anthony Alofsin, William Cronin, Kenneth Frampton, - "Century of Progress" Three Designs for the Chicago World's Fair of 1933 - FLLW Archive Drawing Number 3103.003: Skyscraper for Century of Progress Chicago World's Fair 1931 (p. 225, fig. 218)
Drawing Citation
Drawing 003 - Skyscraper for Century of Progress Chicago World's Fair 1931 - Floor plan and elevation