Foreword to the 1995 Edition / Philip Johnson --Foreword to the 1966 Edition / Henry-Russell Hitchcock -- Preface / Alfred H. Barr, Jr. -- I. Introduction: The Idea of Style -- II. History -- III. Functionalism -- IV. A First Principle: Architecture as Volume -- V. Surfacing Material -- VI. A Second Principle: Concerning Regularity -- VII. A Third Principle: The Avoidance of Applied Decoration -- VIII. Architecture and Building -- IX. Plans -- X. The Siedlung --Appendix: The International Style Twenty Years After