YES THERE IS AN OFFICIAL TRANSLATION,
at least for the Sundays.
As I have shown at
http://musicasacra.com/forum/comments.php?DiscussionID=2736#Item_35
the five propers (Introit, Gradual, Alleluia, Offertory, Communion)
existed in English in 1964 in a Missal that sat on the Altar to be used by the Priest
and therefore the translations had to have been approved.
That people chose/choose to ignore them is a separate matter.
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