Message to His Holiness Dimitrios I, Archbishop of Constantinople Ecumenical Patriarch (November 23, 1988)
[French, Italian]

Letter to Cardinal Giovanni Margeot, Bishop of Port Louis (November 19, 1988)
[Italian, Latin]

Letter to Cardinal Giuseppe Caprio (November 15, 1988)
[Latin]

Letter to Cardinal Jozef Tomko, Special Envoy at the  centenary celebrations of evangelization of Mali (October 14, 1988)
[Latin]

Message to Monsignor Fiorenzo Angelini, Titular Archbishop of Messene (October 14, 1988)
[Italian]

Message to those detained in French prisons (October 4, 1988)
[French, Italian]

Message to His Beatitude Nasrallah Pierre Sfeir, Maronite Patriarch of Antioch (September 20, 1988)
[French, Italian]

Letter to the Ministers General of the Franciscan Family on the fourth centenary of the proclamation of Saint Bonaventure as Doctor of the Church (September 8, 1988)
[Italian]

Letter to Cardinal Miroslav Ivan Lubachivsky, Major Archbishop of Lviv for Ukrainians (September 5, 1988)
[Italian, Latin]

Letter on the occasion of the Meeting for Friendship Among Peoples held in Rimini (August 18, 1988)
[Italian]

Letter to Cardinal Ladislao Paskai, to the Bishops and Catholic faithful of Hungary (August 16, 1988)
[Italian, Latin]

Letter to Cardinal Luigi Dadaglio, President of the Central Committee for the Marian Year (August 14, 1988)
[Italian]

Letter to Cardinal Pio Taofinu'u, Archbishop of Samoa-Apia and Tokelau, on occasion of the 150th anniversary of evangelization of French Polynesia (July 25, 1988)
[Italian, Latin]

Letter to Cardinal Michele Giordano, Archbishop of Naples (July 25, 1988)
[Latin]

Letter to His Grace, the Most Reverend Dr. Robert Runcie, Archbishop of Canterbury (July 12, 1988)
[English, Italian]

Letter to Cardinal Antonio Innocenti, Prefect of the Congregation for the Clergy (July 12, 1988)
[Latin]

Letter to Professor Fabio Roversi Monaco, Magnificent Rector of the University of Bologna (June 17, 1988)
[Italian]

Letter to Cardinal Pietro Pavan on the 60th anniversary of his priestly ordination (June 5, 1988)
[Italian, Latin]

Letter to Cardinal Ugo Poletti, Vicar General of the Diocese of Rome (28 May 1988)
[Italian, Latin]

Letter to Cardinal Pio Taofinu'u, Archbishop of Samoa-Apia and Tokelau (May 25, 1988)
[Italian, Latin]

Letter to Cardinal Louis Albert Vachon, Archbishop of Québec (May 25, 1988)
[Italian, Latin]

Letter to Cardinal Luigi Dadaglio, President of the Central Committee for the Marian Year (May 22, 1988)
[Italian]

Letter to all consecrated persons belonging to Religious communities and Secular Institutes on occasion of the Marian year (May 22, 1988)
[English, Portuguese]

Letter to Cardinal Salvatore Pappalardo, Archbishop of Palermo (May 5, 1988)
[Italian, Latin]

Letter signed by Cardinal Agostino Casaroli, Secretary of State, on occasion of the annual celebration of the Day for the Catholic University (April 12, 1988)
[Italian]

Letter to Cardinal Joseph Ratzinger, Prefect of the Congregation for the Doctrine of the Faith  (April 8, 1988)
[Italian]

Letter to Priests on occasion of Holy Thursday (March 25, 1988)
[English, French, Italian, Latin, Spanish]

Letter to the Bishop of Alexandria on the solemnity of Saint Joseph (March 19, 1988)
[Italian]

Letter to Cardinal Agostino Casaroli, Secretary of State, on the first centenary of the birth of Cardinal Domenico Tardini (February 27, 1988)
[Italian]

Letter to Cardinal Myroslav Ivan Lubachivsky, Major Archbishop of Lviv of the Ukrainians (Magnum Baptismi donum) (February 14, 1988)
[Latin]