Corpus of Latin Ecclesiastical Writers, Vol. LXII: Ambrose's Exposition of Psalm 118

F = Ambrosian fragments D. 84 inf. and A. 138 sup. 6th—7th century (tractate 19)
C = Cambridge fragments B. 14. 3 8th—9th century (tractates 6, 21 sqq. and 7, 7 sqq.)
A = Arras codex original: "cod. Atrebatensis" 590 9th century
G = Ghent codex 172 (454) 10th century
M = Munich codex 4535 10th—11th century
N = Munich codex 13040 11th—12th century
O = Paris codex 15639 12th century
P = Paris codex nouvelles acquisitions 1437 10th century
R = Reginensis codex 32 10th century
T = Trier codex 120 (1285) 11th century
a = editio princeps first printed edition Amerbachiana 1492
b = Ballerini edition, Milan 1876
μ = Maurist edition Refers to the 17th-century edition by the Benedictine Congregation of Saint-Maur.
v = common readings of b and μ