Papers of H.M. Bannister, relating to plainsong and liturgy in the medieval church, based on notes and transcripts from early Latin liturgical manuscripts. The collection is arranged as follows:
- Collections for Sequentiarum melodiae
- Notes and indexes relating to liturgical manuscripts
- Lists of manuscripts in libraries in Great Britain, with detailed notes
- Printed works on sequences, with Bannister's annotations
- Saints and calendars
- Sacramentaries
- Papers relating to Bannister's larger publications
- Miscellaneous