1. Harvard University, MS Lat 477 DS ID: DS10365 Title: Missal Author: Catholic Church Date: circa 1050-1100.
2. Harvard University, MS Typ 701 DS ID: DS10692 Title: Missal Author: Catholic Church Date: ca. 1050-ca. 1100
3. Harvard University, MS Lat 336 DS ID: DS11180 Title: Works Author: Persius Date: between 1075 and 1100