|  | Arch. Sint Pieter, 75, Necrologium, in the front and back are
              leaves from a 12th-century noted missal with staffless neumes
              (De Loos, afb. 22). In the front:
              Iste est modo legendi psalterium in exequiis canonici | 
 |  | Arch. St Marie 373-4, 341-4 and 341-5, leaves of a missal, mid
              12th century, staffless Low Countries neumes (De Loos, afb. 21) | 
 |  | NL-Ua Arch. St Jan 88 has flyleaves from a 15th-century gradual with
              the Mass for Visitatio BMV | 
 |  | Coll. Rijsenburg 128, fragments of a collectarius, 14th century (?)
              Plechelmuskerk in Oldenzaal | 
 |  | Coll. Rijsenburg 130, strips of an antiphoner, ca 1500, perhaps from
              the Plechelmuskerk in Oldenzaal | 
 |  | Coll. Rijsenburg 396, from the Abdij van
              Oostbroek, containing the sequence Sit tibi laus for Willibrordus, early staff notation, traces of red f-line visible (autopsy October
              2003); see also Isak van Harderwijk: Geschied- en letterkundige bijdragen
              (Rotterdam 1837), pp. 14-19 | 
 |  | Inv. 100, deel I (Aanvullingen en wijzigingen op inv. 1-99), p. 68:
              Steenwijk, nr. 185-b: graduale fragment, ca 1500 |