2542. Free Library of Philadelphia, Lewis E M 42:10A Title: Choir book Place: Germany Date: 1450-1475
2543. Free Library of Philadelphia, Lewis E M 42:11 Title: Antiphonary Place: Middle Rhine Date: 1340-1360
2544. Free Library of Philadelphia, Lewis E M 42:11A Title: Choir book Place: Germany Date: 1300-1399
2545. Free Library of Philadelphia, Lewis E M 42:12-13 Title: Antiphonary Place: Regensburg Date: 1300-1325
2547. Free Library of Philadelphia, Lewis E M 42:15 Title: Antiphonary Place: Flanders Date: 1300-1325
2548. Free Library of Philadelphia, Lewis E M 42:16-16A Title: Gradual Place: England Date: 1240-1260
2549. Free Library of Philadelphia, Lewis E M 42:16B Title: Antiphonary Place: Flanders Date: 1300-1325
2550. Free Library of Philadelphia, Lewis E M 42:17 Title: Antiphonary Place: Flanders Date: 1300-1325