Royal Irish Academy LibraryThe Academy Library is an important research centre for the study of Irish history, language, archaeology and the history of Irish science. Home to the Cathach, the sixth-century Latin psalter reputed to have been copied by St Colum Cille (Columba), our repository houses the largest collection of Irish language manuscripts in the world, including Lebor na hUidre (the Book of the Dun Cow), the oldest extant manuscript completely in Irish. We are longterm partners in the Irish Script on Screen project whereby Irish manuscripts are digitised and are freely accessible for research and scholarly purposes. As of November 2015, over 70 of the earliest Academy mss are available on www.isos.dias.ie