Scope and Contents The John F. Long, S.J. Archive contains the papers of this leading Catholic expert on the Russian Orthodox Church, long-time staff member of the Secretariat for Promoting Christian Unity (since 1988, the Pontifical Council for Promoting Christian Unity), and participant in the Second Vatican Council. Long took part in numerous meetings with representatives of the Orthodox churches as well as the Ancient Oriental churches such as the Coptic, Ethiopian, and Syrian, but with a specific mastery...