J.K.MacKenzie B.A., LL.B., Q.C., is a retired Canadian lawyer, father of four, grandfather and widower, who spent over six years researching, using authentic Roman Catholic sources, to compile everything significant he could find on this topic, into this book on the Mass. This was his recent labour of love. He is very eager to spread this good news to all, and thus has offered it for free, as it is available online. A printed version for a small fee is available for those who prefer a book.