Gage Group - View this location on map This group of three buildings takes its name from the northernmost structure which was designed by master architect Louis Sullivan for the Gage Brothers, a hat wholesaler. The facades, which resulted from Sullivan's collaboration with Holabird & Roche, demonstrate two different approaches to the Chicago School, a design movement that led to the creation of modern commercial architecture. The buildings by Holabird & Roche are straightforward, while the facade designed by Sullivan (18 S.) exemplifies his more expressive approach. 30 S. Michigan Ave., Chicago , IL Historical

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