The Chapter outlines the textual heritage of Caucasian Albanian, which mostly consists of the biblical texts concealed in the lower layer of the two Georgian palimpsest codices Sin. georg. NF 13 and NF 55 of St Catherine's Monastery on Mt Sinai. On the basis of new insights gained by advanced imaging techniques, it describes the contents of the different parts of the undertexts and their structure and attempts at a codicological reconstruction of the underlying manuscripts. In addition, it provides an up-to-date survey of the few inscriptions in the Albanian language that have been preserved.