1. Ohio State University, Spec.Rare.MS.MR.Frag.286 DS ID: DS11705 Title: Decretals of Gregory IX Author: Gregory IX Place: Bologna and Italy Date: ca. 1325
2. Ohio State University, Spec.Rare.MS.MR.Frag.287 DS ID: DS11706 Title: Decretals of Gregory IX Author: Gregory IX Place: Bologna and Italy Date: ca. 1300