|←Author Index: Pi||Pope Pius XI
|Pius XI was born was Ambrogio Damiano Achille Ratti. Pope from 1922-1939.|
- Ubi arcano (1922)
- Miserentissimus Redemptor (1928)
- Mortalium Animos (1928)
- Divini illus magistri (1929)
- Casti Connubii (1930)
- Quadragesimo Anno (1931)
- Dilectissima Nobis (1933)
|Some or all works by this author are in the public domain in the United States because they were published before January 1, 1923.
The author died in 1939, so works by this author are also in the public domain in countries and areas where the copyright term is the author's life plus 70 years or less. Works by this author may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.