This unassuming little book is of the greatest national importance: it is the only copy in Scotland of the first book printed in Gaelic (Gaelic Liturgy; year 1567; shelfmark Dd.10.44.). After the Reformation there was a strong impetus, sponsored primarily by the Campbell Earls of Argyll, to evangelise the Highlands and Islands, where Gaelic rather than Scots was spoken. John Carswell, Bishop of the Isles, adapted John Knox’s Book of Common Order into Scottish Gaelic. It was a hugely ambitious undertaking, particularly considering it would be another two centuries before the New Testament was finally published in vernacular Gaelic. This copy has clearly been well-used.