55 ]erome, Epist. 69, ad Oceanum (PL 22, 657); Ambrose, Lib. 8 in cap. 16 Lucae, n. 5 (PL 15, 1857); Augustine, De nuptiis , 1, 10 11 (PL 44, 420). Fifty years after the publication of Arcanum , Pope Pius Xl published his own encyclical Casti Connubii (December 31 1930), which may be found translated, with notes and bibliography, in J. Husslein, S. J., Social Wellsprings, Vol. II, pp. 122-173; also in pamphlet form, translated by Canon G. D. Smith, Catholic Truth Society of London; Paulist Press, New York; with a discussion club outline by Gerald C. Treacey, S. J.; National Catholic Welfare Conference, Washington, 1939. These pontifical acts should be completed by two addresses given by Pope Pius XII (October 29, 1951, and November 26, 1951), English translation published in pamphlet form by the National Catholic Welfare Conference under the title, Moral Questions Affecting Married Life, with a discussion outline by Edgar Schmiedeler, O. S. B.
Source: Arcanum Divinae (Vatican.va)