Documentatie Middelnederlandse handschriften
Indices of chants in selected manuscripts and early printed sources of the liturgical Office. University of Western Ontario (Canada)
The University of Michigan (Ann Arbor, USA)
| | Bibliotheca Neerlandica Manuscripta Documentatie Middelnederlandse handschriften |
| | CANTUS, A Database for Latin Ecclesiastical
Chant. Indices of chants in selected manuscripts and early printed sources of the liturgical Office. University of Western Ontario (Canada) |
| | RELICS. Renaissance Liturgical
Imprints: A Census The University of Michigan (Ann Arbor, USA) |
 | St Patrick's Church, Index of Saints |
| | Das Ökumenische Heiligenlexikon |
 | THE KNIGHTS HOSPITALLER: Ancient and Modern |
| | Order of Canons Regular of Prémontré |
| | Ordo Sanctae Crucis |
| | Matrix (on women's convents) |
 | RISM |
| | PIMS-LMLO website |
| | Musica Devota |
| | Repertorium necrologische bronnen Nederland |
The visitors who are looking for the site that helps analysing the CANTUS files and Hughes' LMLO can visit my CANTUS/LMLO Analysis site.