Pius XI, P., & Catholic Truth Society. (1936). Encyclical letter (vigilanti cura) of His Holiness Pius XI by Divine Providence Pope to our venerable brethren the archbishops and bishops of the United States of America and to the other ordinaries enjoying peace and communion with the Apostolic See on the motion pictures. Catholic Truth Society.

Pius XI, Pope, and Catholic Truth Society. Encyclical Letter (vigilanti Cura) of His Holiness Pius XI by Divine Providence Pope to Our Venerable Brethren the Archbishops and Bishops of the United States of America and to the Other Ordinaries Enjoying Peace and Communion with the Apostolic See on the Motion Pictures. Catholic Truth Society, 1936.