The Sacrifice of the Mass continues its explanations of the Extraordinary Form of the Latin Rite Mass. (Okay, as it was in the early 1900’s. When it was the only Latin Rite Mass form.) Hope you continue to find it educational, because I sure do! (And as always, there’s a lot that applies to the Ordinary Form as well.)
Ch. 11A: The Offertory (antiphon) to the Secret (prayer said quietly by the priest).