We currently find ourselves in an era where even the highest authorities in the Church are claiming, for example, that the Council changed our fundamental liturgical theology, that the celebration of Mass versus populum is a sign of the “concrete manifestation of the acceptance of the teaching of the Second Vatican Council”, and even that the current farce that is the “synod on synodality” is “at the heart of the work of renewal the Council was encouraging”. All of this revisionist history would, of course, be very surprising to the Council Fathers, and the Acta makes this abundantly clear. As Archbishop Agostino Marchetto has put it, the Council’s Acta are (or should be) the “secure basis” for its interpretation. Now that this mammoth digitisation project has been finished (Deo gratias!), it is my hope that this neglected body of primary source material will be better utilised by historians, theologians, scholars - indeed, by anyone who is interested in what Vatican II actually said!
I would like to express my deep gratitude to all those people who, over the years, have been very encouraging and generous in their support of this project. Particular mention should go to Rev Fr Damonn Sypher, F.S.S.P. and Mr Roger McCaffrey, who were incredibly helpful during my acquisition of some of the out-of-print volumes of the Acta et Documenta, and Mr Fernando Penachin, whose help with scanning AS III.2, III.4 and III.6 has been absolutely invaluable. Many, many thanks!
![]() |
| Pope John XXIII during the preparation of Vatican II |
The Antepreparatory Period of Vatican II (1959-60)
Series I (Antepraeparatoria)
Volumen II: Consilia et vota Episcoporum ac Praelatorum
- Pars I: Europa: Anglia, Austria, Belgium, Dania, Finnia, Gallia, Gedanum, Germania
- Pars II: Europa: Gibraltaria, Graecia, Helvetia, Hibernia, Hispania, Hollandia, Hungaria, Islandia, Iugoslavia, Lettonia, Lucemburgum, Lusitania, Melita, Norvegia, Polonia, Portus Herculis Monoeci, Suetia, Turchia Europaea
- Pars III: Europa: Italia
- Pars IV: Asia
- Pars V: Africa
- Pars VI: America Septemtrionalis et Centralis
- Pars VII: America Meridionalis - Oceania
- Pars VIII: Superiores generales religiosorum
- Pars I: Doctrinae capita, Normae generales C.I.C., De personis, Disciplina cleri, De seminariis, De religiosis, De laicis
- Pars II: De sacramentis, De locis sacris, De praeceptis ecclesiasticis, De cultu divino, De magisterio ecclesiastico, De beneficiis et de bonis Ecclesiae temporalibus, De processibus, De delictis et poenis, De missionibus, De oecumenismo, De actuositate Ecclesiae
This volume contains the vota of the various congregations of the Roman Curia.
Volumen IV: Studia et vota Universitatum et Facultatum ecclesiasticarum et catholicarum.
- Pars I-1: Universitates et Facultates in Urbe, 1
- Pars I-2: Universitates et Facultates in Urbe, 2
- Pars II: Universitates et Facultates extra Urbem
![]() |
Pope John XXIII signing the apostolic constitution Humanae salutis (25 Dec 1961), solemnly convoking the Second Vatican Council. |
The Preparatory Period of Vatican II (1960-62)
Series II (Praeparatoria)
Volumen II: Acta Pontificiae Commissionis centralis praeparatoriae Concilii oecumenici Vaticani II
- Pars I: Sessio prima: 12-20 Iunii 1961; sessio secunda: 7-17 Novembris 1961
- Pars II: Sessio tertia: 15-23 Ianuarii 1962; sessio quarta: 19-27 Februarii 1962
- Pars III: Sessio quinta: 26 Martii-3 Aprilis 1962; sessio sexta: 3-12 Maii 1962
- Pars IV: Sessio septima: 12-19 Iunii 1962
- Pars I: Commissiones: Theologica, De episcopis et dioceseon regimine, De disciplina cleri et populi christiani, De religiosis, De disciplina sacramentorum
- Pars II: Commissiones: De sacra liturgia, De studiis et seminariis, De Ecclesiis orientalibus, De missionibus, De apostolatu laicorum. Secretariatus: De scriptis prelo edendis et de spectaculis moderandis, ad christianorum unitatem fovendam
- Pars I: Subcommissio de normis condendis
- Pars II: Subcommissio de materiis mixtis
- Pars III-1: Subcommissio de schematibus emendandis. Sessiones I-VII, 22 Ianuarii-11 Maii 1962
- Pars III-2: Subcommissio de schematibus emendandis. Sessiones VIII-XIV, 15 Iunii-20 Iulii 1962
![]() |
| The bishops and prelates of the world at the Council |
The Second Vatican Council (1962-65)
- Pars I: Sessio publica I. Congregationes Generales I-IX
- Pars II: Congregationes Generales X-XVIII
- Pars III: Congregationes generales XIX-XXX
- Pars IV: Congregationes generales XXXI-XXXVI
The six parts of volume II cover the second session of the Council (September 29 - December 4, 1963).
- Pars I: Sessio publica II. Congregationes generales XXXVII-XXXIX
- Pars II: Congregationes generales XL-XLIX
- Pars III: Congregationes generales L-LVIII
- Pars IV: Congregationes generales LIX-LXIV
- Pars V: Congregationes generales LXV-LXXIII
- Pars VI: Congregationes generales LXXIV-LXXIX. Sessio publica III
The eight parts of volume III cover the third session of the Council (September 14 - November 21, 1964).
- Pars I: Sessio publica IV. Congregationes generales LXXX-LXXXII
- Pars II: Congregationes generales LXXXIII-LXXXIX
- Pars III: Congregationes generales XC-XCV
- Pars IV: Congregationes generales XCVI-CII
- Pars V: Congregationes generales CIII-CXI
- Pars VI: Congregationes generales CXII-CXVIII
- Pars VII: Congregationes generales CXIX-CXXII
- Pars VIII: Congregationes generales CXXIII-CXXVII. Sessio publica V
The seven parts of volume IV cover the fourth and final session of the Council (September 14 - December 8, 1965).
- Pars I: Sessio publica VI. Congregationes generales CXXVIII-CXXXII
- Pars II: Congregationes generales CXXXIII-CXXXVII
- Pars III: Congregationes generales CXXXVIII-CXLV
- Pars IV: Congregationes generales CXLVI-CL
- Pars V: Congregationes generales CLI-CLV. Sessio publica VII
- Pars VI: Congregationes generales CLVI-CLXIV. Sessio publica VIII
- Pars VII: Congregationes generales CLXV-CLXVIII
The three parts of volume V contain the documentation relating to the Central Coordinating Commission of the Council in its various forms.
- Pars I: Consilium praesidentiae (1962). Secretariatus de Conc. negotiis extra ordinem (1962). Commissio de Conc. laboribus coordinandis (Sessiones I-VII: 21 ianuarii - 23 octobris 1963)
- Pars II: Commissio de Concilii laboribus coordinandis (Sessiones VIII-XVII: 29 octobris 1963 - 7 octobris 1964)
- Pars III: Commissio de Concilii laboribus coordinandis (Sessiones XVIII-XXIII: 15 octobris 1964 - 1 decembris 1965). Moderatores (30 octobris 1963 - 26 octobris 1965)
The four parts of this volume contain the documentation relating to the General Secretary of the Council, Archbishop Pericle Felici, covering the four sessions of the Council (with some of part 4 also going up to 1967).
- Pars I: Periodus prima : MCMLXII
- Pars II: Periodus secunda : MCMLXIII
- Pars III: Periodus tertia : MCMLXIV
- Pars IV: Periodus quarta : MCMLXV
This volume, keyed into Volumes I-IV, contains various indices, the major one being the index of names of bishops and prelates at the Council.
Appendices





