New Haven, Beinecke Rare Book and Manuscript Library, 442
From Clavis Canonum
New Haven, Yale University, Beinecke Library, 442 is mid ninth-century copy of the False Decretals. It is key proof that the version it contains, the so-called Cluny recension (otherwise known only from very late copies), is in fact a very early version.
Like other copies of Pseudoisidore, it contains a florilegium of excerpts from the register of Gregory the Great which was named after the Yale manuscript as the oldest known textual witness.
