A short, authoritative, enthralling history of the Roman Mass from the Last Supper to the "Tridentine Mass" as said today. Covers Low Mass, Sacramentaries, other Western Rites, etc. Highlights the reforms of Popes St. Gregory the Great (590-604) and St. Pius V (1566-1572). Says neither "reform" produced a "new" liturgy. Written by Michael Davies. 53 pages.