Addresses : Vegliare con sollecitudine to the Congress of the Italian Association of Catholic Midwives on 29th October, 1951; and Nell'ordine della natura to the Congress known as the "Family Compaign" and other family associations on 26th November, 1951 on Marriage and moral law. - Pius XII, Pope, 1876-1958 (Catholic Truth Society. Publications, 1966)