This book devoted to the contributions of the Austro-American artist and architect Friedrich Kiesler (1890-1965) to the field of design presents previously unpublished material relating to his innovative furniture designs and prototypes from the 1930s and 1940s. Letters, diaries entries, and photographs document the New York cultural environment in which Friedrich Kiesler lived and worked and illuminate the role he played in the contemporary designer scene. After emigrating to New York in 1925, Kiesler soon became an important mediator between European and American positions in the fields of design and architecture. In the following years, he designed furniture and exhibitions and articulated the fundamental principles of a critical theory of functional architecture and design. Such concepts as flexibility, dynamism, and multifunctionality were crucial elements of his theoretical constructs.