Referenced in:

• ed: 263 - Hereford, Cathedral Library, O. III. 2 [Cassiodorus, Institutiones bk. I, coll. as H
• mss: 263 - Hereford, Cathedral Library, O. III. 2 xv-xvi, xlvii-xlix
• st: 573 - Oxford, Bodleian Library, Bodley 391 (S.C. 2222) xliii, xlvii-xlix
• st: 713 - Salisbury, Cathedral Library, 88 xv-xvi, xliv