O'Halloran (Sylvester): Four letters of S. O'Halloran to Charles O'Conor, 1765; with four associated letters, including one from (Chevalier?) O'Gorman to O'Conor, 1765. These are tipped into O'Conor's copy of O'Halloran's History of Ireland, 1778, now in the possession of Dr. L. B. Somerville-Large, Dublin.

Míreanna comhchosúla

• Four letters of S. O'Halloran to Charles O'Conor, 1765; with four associated letters, including one from (Chevalier?) O'Gorman to O'Conor, 1765. These are tipped into O'Conor's copy of O'Halloran's History of Ireland, 1778, now in the possession of Dr. L. B. Somerville-Large, Dublin.
• Sylvester O'Halloran (1728-1807). With portrait.
  de réir: Lyons, J. B.
  Foilsithe / Cruthaithe: (1963)
• Memoir of Silvester O'Halloran, with a portrait.
  Foilsithe / Cruthaithe: (1848)
• The letters of Sylvester O'Halloran II. Edited by J. B. Lyons.
  Foilsithe / Cruthaithe: (1962)
• Addendum to memoir of Silvester O'Halloran. (See pp. 223-250).
  Foilsithe / Cruthaithe: (1848)