"Pei Cobb Freed & Partners" . . . . . "1955" . . . "Pei Cobb" . . "IM Pei & Partners" . . "I. M. Pei and Partners" . . . . "I.M.Pei" . . . . . . . . "I. M. Pei & Partners" . . . "I.M. Pei and Partners" . . . . . . . "I. M. Pei & Associates" . . . "Pei Cobb and Freed" . . "I.M. Pei & Partners" . . . . . . . "Pei, Cobb, Freed & Partners" . . . . . "Pei Cobb Freed & Partners" . . . . . "Pei Cobb Freed & Partners Architects LLP" . . . . . . "Pei Cobb Freed & Partners" . . . . . . . . . . . "Pei Cobb Freed" .