Medieval Manuscripts

• The Cathach
• The Stowe Missal
• Annals of Connacht
• Annals of the Four Masters
• Astronomical and Medical Tract
• Book of Ballymote
• Book of Fenagh
• Book of Fermoy
• Book of Lecan
• Book of the O'Lees
• Book of Ui Maine
• Domnach Airgid
• Leabhar Breac
• Leabhar Gabhála
• Leabhar na hUidre
• Liber Flavus Fergusiorum
• Book of Hours
• Missale Romanum

Modern Manuscripts

• The Academy's archives
• The Charlemont manuscript collection
• Dublin Unitarian Church collections
• Graves Collection
• Knud Jessen Papers
• Heron papers
• Lloyd correspondence
• Marquess MacSwiney papers
• The Music Collections
• Ordnance Survey
• Purcell papers
• R.A. Philips papers
• Tew family documents
• Ussher bird notes
• Moffat Papers
• Masnuscripts in the Irish language
• Windele Collection