The CAO-ECE Project
Cantus Planus: Gregorian Chant Data Files
Institute of Mediaeval Music
: The publisher of the CANTUS indices in print form. The CANTUS publications are found in the series, "Musicological Studies." The Institute's catalogue and ordering information are found through this link.
RELICS: Renaissance Liturgical Imprints
: A database of information about worship books printed before 1601.
Thesaurus Musicarum Latinarum
Center for the History of Music Theory and Literature
: An evolving database of the entire corpus of Latin music theory written during the Middle Ages and the Renaissance. This site contains ordering information for the TML/
saggi musicali italiani