| I-Mb AE XIV 12 |
Missale Ultraiectinum, early 15th century with younger additons. According to the Byvanck-genootschap: penwork from the town of Utrecht, ca 1410-1420; additions (ff. 9-14, 153v-154v) ca 1490-1500.
 | Its sequences are discussed by Calvin Bower in TKVNM 53 |