Collections
Catholic Parish Register Microfilms
165
Sketch books of Irish antiquities
6
Loose Pedigrees, Searches, Correspondence, ca. 1890-1995.
5
Genealogical Office Library Collection
4
Loose Pedigrees, Searches, Correspondence, ca. 1930-2003.
3
Seán O'Duffy Papers, 1920-1977.
3
J. J. O'Connell Papers
1
Thomas Johnson Papers
1
Web archive of the National Library of Ireland
1