Pope Leo XIII.
Discours aux fidèles de Rome et du monde catholique depuis son élection dans le Vatican
Lettre encyclique de S. S. le Pape Léon XIII
Allocution of His Holiness Pope Leo XIII.
Pope Leo XIII, His Life and Letters
The Life of Pope Leo XIII ...
Léon XIII et le Tiers-Ordre
Pope Leo XIII to the Scottish Bishops. [An Encyclical Dated 25th July, 1898.].
Pope Leo XIII and Peace
Lettres apostoliques de Léon XIII, encycliques, brefs, etc
Encyclical of Our Most Holy Father Pope Leo XIII., on the Occasion of the Close of His Golden Jubilee Celebrations
Encyclical Letter of Pope Leo XIII on the Unity of the Church, June 29, 1896
Letter of Pope Leo XIII to the English People
The Great Encyclicals
Pope Leo XIII Complete Set of Encyclicals Volume IV of IV
His Holiness Pope Leo XIII
Apostolic Letter of Pope Leo XIII to the English People
Pope Leo XIII Complete Set of Encyclicals Volume I of IV
Le Livre D'Or Du Pontificat de Léon XIII. (Liste Des Ouvrages Sur Léon XIII. Publiés en Belgique.).