Oxford, GB, Bodleian Library, MS Rawl.c.400 A

Contents:Binding fragments & parts of two rolls.

Bibliography:Dittmer, Luther A. “An English Discantuum Volumen.” Musica Disciplina 8 (1954): 19–58.
Hohler, Christopher. “Reflections on Some Manuscripts Containing 13th Century Polyphony.” Journal of Plainsong and Medieval Music Society 1 (1978): 2–38.