Office of Horticulture's Deirdre Armstrong, by Strauss, Richard, 1989, Smithsonian Archives - History Div, Office of Horticulture's Deirdre Armstrong has sole responsibility for the Mary Livingston Ripley Garden, located between the Arts and Industries Building (visible in the background) and the Hirshhorn Museum. She is pictured here feeding the Japanese koi which is eating right out of her hand..