18. Free Library of Philadelphia, Lewis E M 9:6 Title: Choir book Place: Département de la Loire Date: 1475-1499
25. Free Library of Philadelphia, Lewis E M 16:24-25 Title: Choir book Place: Germany Date: 1400-1499
64. Free Library of Philadelphia, Lewis E M 21:4-28 Title: Choir book Place: Lombardy Date: 1500-1599
90. Free Library of Philadelphia, Lewis E M 24:5 Title: Choir book Place: Emilia-Romagna Date: 1300-1350