Marion Weiss and Michael Manfredi began to collaborate since 1987 but formally established a partnership in 1989. Recent projects include; Women's Memorial and Education Center at Arlington National Cemetry in Virgina, the Olympia Fields Park and Community Center in Illinois, Renovations of Lewisohn Hall and Schermerhorn Auditorium at Columbia University. Recipient of 1999 I.D. Magazine Award, 1998 American Institutes of Architects Award of Excellence. Wrote "Site Specific: The Work of Weiss/Manfredi Architects" (Princeton Architectural Press, 2000).