La Trobe University - Library: Medieval Music Database - Annual cycle of feasts of liturgical chant, liturgical polyphony and secular music of the late middle ages.

Medieval Music Database - Browse By Manuscript

Manuscripts containing works by Guillaume Dufay

Bologna, Biblioteca Universitaria 2216
Florence, Biblioteca Nazionale Centrale, Panciatichiano 26
Oxford, Bodleian Library, MS Canonici Miscellaneous 213
Perugia, Biblioteca Comunale C.43