8 Missionary associations also, notably the Society for the Propagation of the Faith, are well established and active; they are outstanding examples in assisting, by prayer, almsgiving and other means, the heralds of the Gospel engaged in carrying the standard of the Cross of Salvation into the lands of the infidel. In this connection, We cannot refrain from a public expression of praise for those missionary enterprises proper to your own nation which devote themselves with zeal and energy to the wider diffusion of the Catholic Faith. They are: The Catholic Church Extension Society, an organization which has gained glorious distinction for its pious benefactions; The Catholic Near East Welfare Association, which furnishes a providential aid to the interests of Christianity in the Orient; The Indian and Negro Missions, an association approved by the Third Council of Baltimore (Cf. Acts of the same Council , Chapter II) which We confirm and recommend because it is imposed by a very particular charity towards your fellow citizens.
Source: Sertum Laetitiae (Vatican.va)