Margaret Helfand, one of New York’s best known female architects, died yesterday in New York. A former associate in the office of Marcel Breuer and designer in the short-lived office Archigram, she studied art history at Swarthmore College and architecture at the University of California at Berkeley. She also studied with Peter Cook at the Architectural Association in London.

She founded Helfand Architecture in New York City in 1981 and won many awards for designs including Time Out New York’s headquarters, the NYU Stern School of Business, Friends Seminary School, the United Science Center of Swarthmore College, and Automated Trading Desk Technology Campus in Charleston, South Carolina. She served as president of the AIA New York Chapter in 2001, and in 2006 she designed the exhibition The Fashion of Architecture: Constructing the Architecture of Fashion at the Center for Architecture in New York City. She was the recipient of the 2002 Rome Prize in Architecture and lived in New York City and Orient, New York.