Olomouc, Státní archiv, C.O. 266
Selected Canon Law Collections, ca. 500–1234
Olomouc, Státní archiv, C.O. 266 is described as a copy of Gratian, Concordia discordantium canonum by Pennington (Bio-Bib Report a242), but this probably is an erroneous reference to Olomouc, Státní archiv, C.O. 226.