To this day, this is still one of the most important studies ever made about the New Mass and its theological deficiencies.
When was the last time you read "A Brief Critical Study of the New Order of Mass" which was given to Pope Paul VI in September 1969?
Did you know that though commonly called "The Ottaviani Intervention", the study was actually chaired by Archbishop Marcel Lefebvre?
An extract from the study's preface
The accompanying critical study of the Novus Ordo Missae, the work of a group of theologians, liturgists and pastors of souls, shows quite clearly in spite of its brevity that if we consider the innovations implied or taken for granted, which may of course be evaluated in different ways, the Novus Ordo represents, both as a whole and in its details, a striking departure from the Catholic theology of the Mass as it was formulated in Session XXII of the Council of Trent. The “canons” of the rite definitively fixed at that time provided an insurmountable barrier to any heresy directed against the integrity of the Mystery.