Art historian and writer. Wife of Sigfried Giedion and close friend of Breuer’s. She studied under Heinrich Wölfflin in Munich, like her husband, and would go on to write one of the first comprehensive books on modern sculpture, Modern Plastic Art: Elements of Reality, Volume and Disintegration (1937) later revised as “Contemporary Sculpture: An Evolution in Volume and Space “ (1954). She and Breuer often discussed contemporary art in their letters.