1. Free Library of Philadelphia, Lewis E M 23:16 DS ID: DS5039 Title: Choir book Place: Florence and Italy Date: 1300-1399
2. Free Library of Philadelphia, Lewis E M 25:24 DS ID: DS5102 Title: Gradual Place: Florence and Italy Date: 1385-1399
3. Free Library of Philadelphia, Lewis E M 46:4 DS ID: DS5402 Title: Choir book Place: Florence and Italy Date: 1340-1360