Modern Manuscripts
The Library’s Modern Manuscript collections are a major research source for the Irish language, and the history, topography, antiquities and natural history of Ireland, as well as for genealogy and family history. The Ordnance Survey of Ireland archive is one of the largest and better known of our collections, comprising letters, memoirs and drawings made by the surveyors and antiquarians employed on the 19th-century survey of Ireland on the 6-inch scale.