Visiting Fellow, Institute of Developing Economies, Tokyo, April 1972 - January 1973; May - September 1977.
Visiting Fellow, Institute for the Study of languages and Cultures of Asia and Africa, Tokyo University for Foreign Studies, February - September 1973; July - September 1987; October 1989 - September 1990.
Visiting Professor, Sorbonne University, Paris IV, February 1980.
Visiting Professor, Essen, Kiel, Hamburg and Freiburg Universities, Germany, November - December 1982.
Part-time Lecturer, CASA, The American University in Cairo, 1983 - 1991.
Lecture Tour in USA organized by MESA, covered UCLA, USCLA, SCULA, Stanford University, Georgia State University, Mills College (November 1990).
Organized and Chaired six symposiums and conferences in Cairo and Ain Shams Universities, Egypt, 1978 - 1993.
Chairman, Historical Studies Unit, Center of Political and Strategic Studies, Al-Ahram Organization, Cairo, since February 1980.
Member, The Permanent Academic Committee of History, Supreme Council of the Egyptian Universities, since October 1985.
Member, History Committee, The Supreme Council of Culture, Egypt, Since 1991.
President, The Egyptian Historical Studies Association, since April 1999.
Editor in Chief, Ruzname, Annual Bulletin of the Egyptian National Archives, Cairo 2003 to present.
Misr Lilmisriyyin, Maiat `Am ala al-Thawrah al-`Urabiyyah (Egypt for the Egyptians, Hundred years of the Urabi Revolution), Center for Political and Strategic Studies, Al-Ahram Organization, Cairo 1981.
Misr Wa `Alam al-Bahr al-Mutawassit (Egypt and the Mediterranean World), Cairo 1986.
al-`Arab fi Ifriqya, al-Juzur al-Tarikhiyyah wa al-Waqi` al-Mu`asir (Arabs in Africa, Historical Roots and Recent Situation), Cairo 1987.
Misr Wa `Alam al-Bahr al-Mutawassit fi al`Asr al-Hadith (Egypt and the Mediterranean World in Modern Times), Cairo 1989.
Arba`un `Aman `ala Thawrat Yulyu, Dirasah Tarikhiyyah (Forty Years of the July Revolution, A Historical Study), Center for Political and Strategic Studies, Al-Ahram Organization, Cairo 1992.
Nadwat Tarikh Misr al-Iqtisadi wal-Ijtima`i fi al-`Asr al-`Uthmani (Symposium on Economic and Social History of Ottoman Egypt), Bulletin of the Faculty of Arts, Special Issue, vol 57, Cairo University Press, Cairo 1993.
al-`Ilaqat al-Misriyya al-Britania 1951-1954 (Anglo-Egyptian Relations 1951-1954), Center for Political and Strategic Studies, Al-Ahram Organization, Cairo 1995.
al-Ahzab al- Misriyya 1922-1953 (The Egyptian Parties 1992-1953), Center for Political and Strategic Studies, Al-Ahram Organization, Cairo 1995.
Harb al-Suez b’ad Arba`in `Aman (Suez War after 40 Years), Center for Political and Strategic Studies, Al-Ahram Organization, Cairo 1997.
Islah am Tahdith? Misr Fi Asr Muhammad Ali, (Reform or Modernization – Egypt Under Muhammad Ali), Cairo 2000.
Al-Adala Bayn Al-Shri/a Wa Al-Waqi, Fi Misr Fi Al-Asr Al-Usmani (Justice Between Islamic Law and Social Realities in Ottoman Egypt), Cairo 2002.
Watha’iq Misr fi al-Qarn al’ishreen (Documents of Egypt in the 20th century), Cairo 2002.
Khamsoun Aaman aala Thawrat Yulyu (50 year after the July Revolution, A Symposium), Cairo 2003.
Al-Maqalat al-Siyasiya al-Sahafyia li Taha Husayn (Press Articles on Politics by Taha Husayn), 5 volumes, Cairo 2002-2004.