1966

• Letter to the Bishop of Laghouat (Sahara) on the occasion of the 50th anniversary of the death of Charles de Foucauld (December 1, 1966)
  [French, Italian]

• Est cur laetemur  (October 30, 1966)
  [Latin]

• Letter to the Bishops of Vietnam (September 30, 1966)
  [French]

• Cum iam  (September 21, 1966)
  [Latin]

• Novimus tibi (September 8, 1966)
  [Latin]

• Advolat sueto (September 8, 1966)
  [Latin]

• Letter to H.E. Msgr Vincentas Brizgys, Titular Bishop of Bosana (September 4, 1966)
  [English]

• Decem cum condas (August 30, 1966)
  [Latin]

• Postquam gravissima (August 28, 1966)
  [Latin]

• Sacrosancta Portiunculae (July 14, 1966)
  [Latin]

• Letter to H.E. U Thant, Secretary General of the United Nations (May 26, 1966)
  [French]

• Letter to the Polish Episcopate on the occasion of the celebrations of the first Millennium of Christianity in Poland (May 15, 1966)
  [Latin]

• Letter to Cardinal Stefan Wyszynski, Pontifical  Legate on the occasion of the celebrations of the first Millennium of Christianity in Poland (May 1, 1966)
  [Latin]

• Benevolentiae caritas (April 10, 1966)
  [Latin]

• Ordinis Praedicatorum (March 26, 1966)
  [Italian, Latin]

• Vox laetitiae (March 25, 1966)
  [Latin]

• Message to de Patriarch Athenagoras I (March 16, 1966)
  [French]

• Quamquam religiosus (March 10, 1966)
  [Latin]

• Novimus te (March 9, 1966)
  [Latin]

• Letter to Mister Thant, Secretary General of the United Nations (January 24, 1966)
  [French]