Bachelor, University California-Berkeley College Architecture, 1955. Master of Fine Arts, Syracuse University, 1963.
Architectural designer (Peggy Winslow) Zachary Rosenfield, New York City, 1963—1964, Vollmer Associates, New York City, 1964—1965, Walter Dorwin Teague Associates, New York City, 1965—1967. Contract author Harcourt Brace Jovanovich Inc., 1968—1979. Director curriculum International Center Educational Advancement, since 1976.
Private practice, since 1979. Consultant Margaret Cottom-Winslow Associations: Playground Clearing House, Inc., Phoenixville, Pennsylvania, since 1979, Talcott Mountain Science Center, Avon, Connecticut, 1982, Pratt Institute, Brooklyn, 1979.
Member of American Association of University Women, Architectural Alliance, I.P.A., National Association Female Executives, National Council Teachers of English.
Married Alan George Winslow, August 22, 1954 (divorced 1963). Children: Curtis Matthew, Bradford Thomas.