With Pope John XXIII's edition of the Roman Missal, the use of the letter J in printing Latin was dropped even in liturgical books, which had preserved that usage long after it ceased in the printing of ordinary Latin texts, including documents of the Holy See.
newadvent.org
Thurston, Herbert (1910), "Hail Mary", The Catholic Encyclopedia, vol. VII, New York: Robert Appleton Company, retrieved 2007-09-19
