Referenced in:

• ed: 463 - London, British Library, Royal 5. F. xiii [Ambrose, Epistulae, coll. as L]
• mss: 463 - London, British Library, Royal 5. F. xiii IV.348
• mss: 544 - Oxford, Bodleian Library, Bodley 94 (S.C. 1904) IV.349
• ed: 581 - Oxford, Bodleian Library, Bodley 516 (S.C. 2570) [Ambrose, Epistula ad Vercellensem ecclesiam, coll. as O]
• mss: 581 - Oxford, Bodleian Library, Bodley 516 (S.C. 2570) IV.349
• mss: 595.5 - Oxford, Bodleian Library, Bodley 765 (S.C. 2544), fols. 10-77 IV.349
• ed: 799 - Boulogne-sur-Mer, Bibliothèque municipale, 32 (37) [Epistulae lxiv-lxviii coll. as B1]
• mss: 799 - Boulogne-sur-Mer, Bibliothèque municipale, 32 (37) IV.346