Quotes:Leo XIII, Pope
Zirkoff, Boris
Leo XIII, Pope (1810-1903). *Acta Leonis XIII, Rome, 1878-1903, 26 vols.; *Sanctissimi Domini N. Leonis XIII allocutiones, epistolae, etc., Bruges and Lille, 1887, etc.; *The Great Encyclicals of Leo XIII, ed. by J. J. Wynne, New York, 1902; Papal Bull *Dolemus inter alia ..., July 13, 1886.
Source: Boris de Zirkoff, «H. P. Blavatsky Collected Writings», vol. 9, p. 442