Pope Pius XII
Humani Generis §44
Humani Generis: Concerning Some False Opinions Threatening to Undermine the Foundations of Catholic Doctrine
44 Relying on this hope, which will be increased by your pastoral care, as a pledge of celestial gifts and a sign of Our paternal benevolence, We impart with all Our heart to each and all of you, Venerable Brethren, and to your clergy and people the Apostolic Benediction. Given at Rome, at St. Peter's, 12 August 1950, the twelfth year of Our Pontificate.
Source: Humani Generis (Vatican.va)