A seventeenth-century Bollandist transcript of a lost twelfth-century cartulary of St Albans Abbey, Hertfordshire, proved to contain 'better' texts of charters previously known only from the abbreviated versions in the cartulary compiled in the mid-thirteenth century by Matthew Paris. See Simon Keynes, 'A Lost Cartulary of St Albans Abbey', Anglo-Saxon England 22 (1993), pp. 253-79.
The 'new' material from the Bollandist transcript, including several hitherto unpublished texts in the vernacular, is published in Charters of St Albans, ed. Julia Crick, Anglo-Saxon Charters 12 (Oxford, 2007).