The Conspectus of Extant Manuscripts lists 114 free-standing copies in 112 manuscripts of the Latin Sibylla Tiburtina, most of which were unknown to previous editors. These manuscript references were collected over an extended period, until I closed the list in summer 2004 for practical reasons. During this period the number of manuscripts has grown steadily and there is no doubt that further references will come to light in the future. I would be very grateful to be informed of any such additions.