Pei Cobb Freed & Partners is an American architectural firm based in New York City. Its work has received awards. The firm provides architectural services, as well as planning and urban design. The firm has changed names twice: 1955 – Originally I. M. Pei & Associates, founded by I. M. Pei, Eason H. Leonard, and Henry N. Cobb 1966 – Renamed I. M. Pei & Partners 1989 – Renamed Pei Cobb Freed & Partners