In addition:

Interpreter, (Russian-English) Pugwash Conference, Stowe, Vermont 1961; editor Radio Liberty Munich 1962, exchange teacher Hanover, Berlin 1963 - 1965; idea-giver to wrap Reichstag 1971, project director, Wrapped Reichstag 1971 - 1994, project historian "Wrapped Reichstag" 1994-96, consultant for restoration of the Brandenburg Gate 1990-1991, member of the jury, competition for Restoration of Reichstag 1993, member of the curatorium, Sachsen-Anhalt Expo 2000 Corp (since 1996), chairman, special committee on culture, SPD Berlin (sind 1994), founding member, member of the board, Association of Independent Historians. Received the Berlin Distinguished Service Cross 1995. Member of Foreign Press Association. Freelance writer for the Tagesspiegel (on retainer) until 2001, and for the Frankfurter Allgemeine Zeitung; occasional pieces for Building Design, London and for Architectural Review, London. Drafted parts of Clinton Speech in Berlin July 1994. Occasional TV features for Radio-TV Free Berlin. Have narrated two films for Brian Lamb about Berlin for C-Span. (1990, 1995), was consultant to US exhibit about US Embassy in Berlin at National Building Museum, Washington; advised and corrected article about Berlin for National Geographic (December 1996). Consultant to US film production about the future US Embassy in Berlin. Member of committee to select "Capital City Art Projects" for realisation. Member of committee to mount exhibition on 300th anniversary of Prussia becoming a kingdom, for Potsdam; Member of committee to found a house of brandenburg-prussian history, Potsdam. Otherwise continually researching the Reichstag and the Brandenburg Gate and updating my publications.