Reconstruction of the remnants of a single manuscript: most folios are in Grottaferrata with the shelfmark I-GR Kript. Lat. 224; one folio is now in Hanover, N.H. (Dartmouth MS 2387), and fits between fols. 3 and 4 of the Grottaferrata source, completing the piece on f. 3v and beginning the piece on 4r.
The original order of the extant folios cannot be established. The vernacular pieces were added by other copyists; thus the original manuscript was apparently devoted to Mass sections. Probably copied at St. Giustina Benedictine Abbey in Padua.