Collectio canonum in Verona, BC, LIX (57)
From Clavis Canonum
Maassen p. 753 And Green, Innocent p. 28 treat the contents of Verona, Biblioteca Capitolare, LIX (57), fol. 1-255 as a separate collection, fragmentary at 5he beginning and the end; according to Maassen, it contains several decretal letters including at least two of Leo I and one of Innocent I (JK 303).