https://catholic.net/op/articles/287/cat/1198/magnae-dei-matris.html
Encyclical on the Rosary of Pope Leo XIII promulgated on September 8, 1892, to the Patriarchs, Primates, Archbishops, and other Ordinaries in Peace and...
magnae dei matriscatholic net
https://www.vatican.va/content/leo-xiii/en/encyclicals/documents/hf_l-xiii_enc_08091892_magnae-dei-matris.html
Encyclical Magnae Dei Matris of Leo XIII, 8 September 1892
magnae dei matrisseptember