"On Heartfield" / Heiner Muller -- "On the Subject" / Peter Pachniche and Klaus Honnef -- "Heartfield and Modern Art" / Nancy Roth -- "Morally Rigorous, Visually Voracious" / Peter Pachnicke -- "Symbolic Form as a Graphic Cognitive Principle: An Essay on Montage" / Klaus Honnef -- Catalogue -- "Heartfield's Moscow Apprenticeship, 1931-1932" / Hubertus Gassner -- "Montage Elements" / Sergei Tretyakov -- "Biographical Chronology" / Michael Krejsa and Petra Albrecht