Referenced in:

• ed: 368 - London, British Library, Cotton Tiberius A. xv, fols. 1-173 [twenty-four letters of Alcuin coll. as A1]
• st: 368 - London, British Library, Cotton Tiberius A. xv, fols. 1-173 10
• ed: 383 - London, British Library, Cotton Vespasian A. xiv, fols. 114-79 (‘Letter-book of Archbishop Wulfstan’) [base MS (= A2) for Alcuin, Epistolae]