Ad Diem Illum Laetissimum

On the Immaculate Conception

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Topics

Original text published before 1931: public domain in the US. Modern English translations (e.g. vatican.va's) may still be under copyright.

Short link

This catalogue

Ad Diem Illum Laetissimum (1904). On the Immaculate Conception. docs.church. https://docs.church/ad-diem-illum-laetissimum

Official citation

Pius X, Ad Diem Illum Laetissimum (2 February 1904). https://www.papalencyclicals.net/pius10/p10imcon.htm