Sources of past canon law

As can easily be seen, many of the items included in this list are not canonical sources, or not only canonical sources, but resources that contain various types of documents or that may otherwise be helpful in researching the history of canon law.

Ancient Church Orders
- Didaché
  - Greek
  - Italian (Intratext)
  - English
  - German
  - French (migne.fr)
- Traditio Apostolica (English)
- Canones Hippolyti
- Constitutio Ecclesiastica Apostolorum
- Didascalia
  - English
  - German
  - French (Internet Archive)
- Canones ecclesiastici apostolorum
  - English
  - German
- Constitutiones Apostolorum
  - Greek (Google Books)
  - English
  - German
- Canones Apostolorum (English)
Church Fathers
- Patrologia Graeca (Migne) (patristica.net / Google Books)
- Patrologia Latina (Migne)
  - patristica.net / Google Books / Internet Archive
  - ProQuest (with credentials only)
Councils
- Ecumenical councils
  - Conciliorum oecumenicorum decreta (1973) (Internet Archive)
  - Ecumenical councils (Documenta catholica omnia)
  - English (Fordham University)
  - English (Papal encyclicals online)
  - English (Enchiridion Vaticanum IntraText)
  - Council of Trent
  - First Vatican Council
    - Documents (www.vatican.va)
    - Mansi, vol. 49-53 (fscire.it)
    - Collectio Lacensis, vol. VII (Internet Archive)
  - Second Vatican Council
    - Documents (www.vatican.va)
    - Acta et Documenta / Acta Synodalia (Index)
    - Acta et Documenta / Acta Synodalia: Title Pages (Internet Archive)
- Mansi, Sacrorum Conciliorum Nova et Amplissima Collectio (fscire.it)
  - List of volumes
- Labbe - Cossart, Sacrosancta concilia ad regiam editionem exacta
- Ecclesiae Occidentalis Monumenta Iuris Antiquissima, ed. C. H. Turner (Oxford, 1899–1939) (Internet Archive)
- Acta et decreta sacrorum conciliorum recentiorum, Collectio Lacensis
  - vol. I - VII (Hathi Trust)
  - vol. I: Concilia quae ab episcopis ritus latini ab a. 1682 usque ad a. 1789 sunt celebrata
    - Internet Archive
    - Google Books
  - vol. II: Concilia quae ab episcopis ritum orientalium ab a. 1682 usque ad a. 1789, indeque ad a. 1869 sunt celebrata ... (Google Books)
  - vol. III: Concilia quae ab episcopis Americae Septentrionalis et Imperii Britannici ab a. 1789 usque ad a. 1869 celebrata sunt (Google Books)
  - vol. IV: Concilia quae ab episcopis Galliae ab a. 1789 usque ad a. 1869 celebrata sunt (Google Books)
  - vol. VII: Acta et decreta Sacrosancti Oecumenici Concilii Vaticani (Internet Archive)
- Colección de Cánones y todos los Concilios de la Iglesia de España y de América, ed. J. Tejada y Ramiro (Biblioteca Digital AECID)
- Collectio maxima conciliorum omnium Hispaniae, et Novi Orbis, epistolarumque decretalium celebriorum, ed. José Saenz Aguirre (Google Books)
- The Canons of the Eastern Orthodox Church (Orthodox collection)
- Hefele, Histoire des Conciles (Internet Archive)
Roman Pontiffs
- Enchiridion Vaticanum IntraText
- Bullaria
  - Bullarium, ed. Laertius Cherubini (Roma 1586) (BSB München)
  - Bullarium romanum, vol. 1-3 (Venezia 1623) (BSB München)
  - Magnvm Bvllarivm Romanvm, vol. 1-5 (Lyon 1655-1712) (BSB München)
  - Magnum Bullarium Romanum, vol. 1-5 (Lyon 1692) (Documenta catholica omnia)
  - Bullarium Romanum, vol. 7-14 (Romae 1733-1744) (BSB München)
  - Magnum Bullarium Romanum, vol. 1-12 (Luxembourg 1727-1739) (BSB München)
  - Magnum Bullarium Romanum, vol. 1-19 (Luxembourg 1739-1758) (BSB München)
  - Bullarium Benedicti XIV, vol. 1-4 (Roma 1746-1757) (BSB München)
  - Bullarium Benedicti XIV, vol. 1-4 (Roma 1754-1762) (BSB München)
  - Bullarium Benedicti XIV, vol. 1-4 (Venezia 1768) (BSB München)
  - Bullarii romani continuatio, vol. 1-20 (Roma 1835-1857) (BSB München)
  - Bullarium Romanum, ed. Tomassetti, vol. 1-24 (Torino 1857-1872) (BSB München)
- Other collections of papal documents
  - Decretals (Documenta catholica omnia)
  - Decretal Letters (Anglo-Saxon Canon Law)
  - Papal Document Directory (Papal encyclicals online)
Collections of medieval sources
- Monumenta Germaniae Historica, Leges
- Carolingian Canon Law (Abigail Firey)
- Regulae, ordinationes et constitutiones Cancellariae apostolicae (Andreas Meyer)
- Regulae cancellariae apostolicae, ed. Emil von Ottenthal
- Codices Electronici Ecclesiae Coloniensis (CEEC) (Diözesan- und Dombibliothek Köln)
- Clavis Canonum (Linda Fowler-Magerl)
- Collections of links to medieval sources
  - Anglo-Saxon Canon Law (Michael D. Elliot)
  - The Medieval Canon Law Virtual Library (David M. Freidenreich)
    - The Medieval Canon Law Virtual Library (Back Door)
- Individual collections
  - Projekt Pseudo-Isidor (ca. 850, Karl Georg Schon)
  - Ivo of Chartres, Opera (ca. 1040-1115)
  - Collectio canonum Polycarpus (XII s.)
Corpus Iuris Canonici
- Indices (www.palaeographia.org)
- Indices Canonum ... ed. X. Ochoa - A. Diez (Universität Würzburg)
- Complete edition, Lyon 1515
- Complete edition Rome 1582
- Complete edition, Graz 1959, PDF
  - vol. 1 (753 MB)
  - vol. 2 (380 MB)
- Edizione completa Graz 1959 (pagina per pagina) (Columbia University)
  - vol. 1
  - vol. 2
- Decretum Gratiani
  - Leipzig 1879 (BSB München)
  - First recension, ed. Anders Winroth
- Decretales Gregorii IX (= Liber Extra)
  - Leipzip 1881 (Augsburg)
  - IntraText Edition
- Decretales Bonifatii VIII (= Liber Sextus), Clementinae, Extravagantes
  - Regulae iuris in VIº (Bruno Esposito, in eight languages)
  - Tituli decretalium
  - Concordantiae Titulorum Decretalium
Roman Curia
- Collectanea S. Congregationis de Propaganda Fide vol. 1-2 (1622-1906) (Obras católicas)
- Thesaurus Resolutionum S. C. Concilii (Internet Archive)
- Collectanea in usum secretariae Sacrae Congregationis episcoporum et regularium (Internet Archive)
- Decreta authentica Congregationis Sacrorum Rituum (1898-1947) (Internet Archive)
Codex Iuris Canonici 1917
Collections after 1917
- Canonical Decisions of the Holy See (1917-1933) (Stanislaus Woywod)
- Interpretatio authentica Codicis iuris canonici et circa ipsum Sanctae Sedis iurisprudentia 1916-1947 (M. Conte a Coronata)
- Enchiridion de statibus perfectionis (1949) (Sacra Congregatio de Religiosis)
- Leges Ecclesiae post Codicem iuris canonici editae (Vol. I-V: 1917-1978) (Xavier Ochoa)
- The Canon Law Digest. Officialy published Documents Affecting the Code of Canon Law (Volume 1-7: 1917-1972)
- Responsiones ad proposita dubia. Collectio 1962-1992
4 Motu Proprio for the Catholic oriental churches ("CICO") (1949-1957)
- HTML (vatican.va)
Documents which we have removed from our list of norms of current universal law