Partner at Tod Williams Billie Tsien Associates, New York since 1986.
ch:person=18536393
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<ref name=CH>{{cite web |url=https://collection.cooperhewitt.org/people/18536393/ |title=Billie Tsien |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=20 April 2024 |publisher=Smithsonian Institution}}</ref>
