(en) « Louis Sullivan's Architectural Ornament: A Brief Note concerning Humanist Design in the Age of Force », sur Perspecta, (DOI10.2307/1566883), p. 73–80
David Roderland, Frand Spielmanet al., « Target close to deal to move into old Carsons on State Street », Chicago Sun-Times, (lire en ligne, consulté le )