In 2008 I produced the first English translation of the Lateran Treaty since 1929. This was quite a challenge owing to the opaque nature of the source text, the arcane language and the outdated and specific clerical terminology.
First, the Concordat of 1929. Part of the Treaty, it was also known as Mussolini's Concordat:
Second, my new translation:
Finally, the full English version of the Treaty itself: