Roma, Biblioteca Vallicelliana, A.18
Selected Canon Law Collections, ca. 500–1234
According to Maassen, p. 869, the manuscript Cod. Vallicell. A.18 contains copies of Cresconius, the Hibernensis, and a collection only known from this manuscript. However, this seems to be a misguided reference to Roma, Biblioteca Vallicelliana, Tomus XVIII.