Advent to Pentecost: Comparing the Seasons in the Ordinary and Extraordinary Forms of the Roman Rite
Patrick Regan provides a valuable study that will be an essential tool for academic research, pastoral practice, and liturgical planning. He demonstrates the organic development of the Missale Romanum 1970 in continuity not only with Missale Romanum 1962 but also with all that preceded it, and in so doing he presents the close relationship between the ‘Ordinary’ and the ‘Extraordinary’ forms of the Roman Rite.  Regan’s research sheds new light on the purpose and meaning of the liturgical seasons and feasts of the Roman calendar.