Cambridge, GB, Trinity College, O.3.58 Date:1400 -1450 Dimensions:200.7 cm Length x7.8 cm Width Number of Pieces:3 Type:Music Shelfmark:O.3.58 Provenance:East Anglia Contents:13 anonymous carols on one side, in white mensural notation with red coloration; a later hand added Latin Offices on the reverse side. Description:Opisthographic. Bibliography:Edsall, Mary Agnes. “Arma Christi Rolls or Textual Amulets?: The Narrow Roll Format Manuscripts of ‘O Vernicle.’” Magic,Ritual, and Witchcraft 9, no. 2 (2014): 178–209. Fenlon, Iain, ed. Cambridge Music Manuscripts, 900-1700. Cambridge: Cambridge University Press, 1982. Stevens, John. Mediaeval Carols. Musica Britannica 4. London: Stained and Bell, 1970. Online Images: External link