Referenced in:

• ed: 56 - Cambridge, Corpus Christi College, 183 96-7 [base MS for Mass of St Cuthbert]
• st: 94 - Cambridge, Corpus Christi College, 328, pp. 1-80 91 n. 25 [mass]
• st: 155 - Cambridge, Sidney Sussex College, Δ. 5. 15 (100), pt. ii 90-1, 95